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AS 1101.3—2005

Australian Standard™

Graphical symbols for general engineering

Part 3: Welding and non-destructive examination

AS

11

01

.3—

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This Australian Standard was prepared by Committee WD-001, Welding Definitions and Symbols. It was approved on behalf of the Council of Standards Australia on 25 November 2004. This Standard was published on 31 March 2005.

The following are represented on Committee WD-001:

Australian Industry Group

Bureau of Steel Manufacturers of Australia

New Zealand Heavy Engineering Research Association

Welding Technology Institute of Australia

Keeping Standards up-to-date

Standards are living documents which reflect progress in science, technology and systems. To maintain their currency, all Standards are periodically reviewed, and new editions are published. Between editions, amendments may be issued. Standards may also be withdrawn. It is important that readers assure themselves they are using a current Standard, which should include any amendments which may have been published since the Standard was purchased.

Detailed information about Standards can be found by visiting the Standards Web Shop at www.standards.com.au and looking up the relevant Standard in the on-line catalogue.

Alternatively, the printed Catalogue provides information current at 1 January each year, and the monthly magazine, The Global Standard, has a full listing of revisions and amendments published each month.

Australian StandardsTM and other products and services developed by Standards Australia are published and distributed under contract by SAI Global, which operates the Standards Web Shop.

We also welcome suggestions for improvement in our Standards, and especially encourage readers to notify us immediately of any apparent inaccuracies or ambiguities. Contact us via email at [email protected], or write to the Chief Executive, Standards Australia, GPO Box 5420, Sydney, NSW 2001.

This Standard was issued in draft form for comment as DR 04480.

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AS 1101.3—2005

Australian Standard™



Originated as AS Z6—1955. Previous edition AS 1101.3—1987. Third edition 2005.

COPYRIGHT

© Standards Australia

All rights are reserved. No part of this work may be reproduced or copied in any form or by

any means, electronic or mechanical, including photocopying, without the written

permission of the publisher.

Published by Standards Australia GPO Box 5420, Sydney, NSW 2001, Australia

ISBN 0 7337 6555 6

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AS 1101.3—2005 2

2

PREFACE

This Standard was prepared by the Joint Standards Australia/Standards New Zealand

Committee WD-001, Welding Definitions and Symbols, to supersede AS 1101.3—1987.

The 1987 edition of the Standard was generally based on ANSI/AWS A2.4-79, Symbols for

Welding and Non-destructive Testing, and the permission of the American Welding Society

Inc. to use their Standard was acknowledged.

This edition continues to follow the ANSI/AWS A2.4, and takes cognizance of its 1998

edition.

The main changes in this edition include—

(a) the use of a new symbol for edge weld to replace the symbols for flange edge and

corner welds (see Section 6); and

(b) the introduction of a symbol for stud weld (see Section 11).

In addition, the format of the Standard has been changed and editorial changes have been

included in line with current Standards Australia policy.

The Standard provides a scheme whereby complete details of welds and welded joints can

be delineated on drawings. A separate section covers symbols for use on drawings to

specify requirements for non-destructive examination for determining the soundness of

materials.

The method for symbolic representation of welds on engineering drawings used in this

standard is consistent with the ‘third angle’ method of projection, which is the preferred

method given in AS 1100, Technical drawing, Part 101: General principles. It should be

noted, however, that the scheme is equally appropriate to drawings in which the ‘first angle’

method of projection is used.

The committee noted the practice currently adopted in ISO 2553, Welded, brazed and

soldered joints; symbolic representation on drawings, in regard to the position of the

symbols on drawings, viz., the dual reference line, and felt that this situation should not be

carried over into this Standard. Therefore, the practice of using one continuous reference

line remains unaltered in this edition.

Illustrations used with the text are intended only to show how symbols may be used to

convey welding or testing information and do not necessarily represent good or accepted

design practice.

The terms ‘normative’ and ‘informative’ have been used in this Standard to define the

application of the appendix to which they apply. A ‘normative’ appendix is an integral part

of a Standard, whereas an ‘informative’ appendix is only for information and guidance.

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3 AS 1101.3—2005

3

CONTENTS

Page

SECTION 1 SCOPE AND GENERAL

1.1 SCOPE ........................................................................................................................ 5

1.2 REFERENCED DOCUMENTS .................................................................................. 5

1.3 DEFINITIONS ............................................................................................................ 5

1.4 DESIGN AND DIMENSIONS OF STANDARD SYMBOLS..................................... 5

SECTION 2 BASIC PRINCIPLES

2.1 BASIC SYMBOLS...................................................................................................... 6

2.2 BASIC TYPES OF JOINTS AND WELDS................................................................. 6

2.3 GENERAL PROVISIONS........................................................................................... 9

SECTION 3 SYMBOLS FOR FILLET WELDS

3.1 GENERAL ................................................................................................................ 29

3.2 SIZE OF FILLET WELDS ........................................................................................ 29

3.3 LENGTH OF FILLET WELDS................................................................................. 30

3.4 EXTENT OF FILLET WELDING............................................................................. 33

3.5 DIMENSIONING OF INTERMITTENT FILLET WELDING.................................. 33

3.6 TERMINATION OF INTERMITTENT FILLET WELDING ................................... 34

3.7 COMBINATION OF INTERMITTENT AND CONTINUOUS FILLET WELDING34

3.8 FILLET WELDS IN HOLES AND SLOTS .............................................................. 34

3.9 SURFACE FINISH AND CONTOUR OF FILLET WELDS .................................... 36

3.10 SKEWED JOINTS .................................................................................................... 38

SECTION 4 SYMBOLS FOR BUTT WELDS

4.1 GENERAL ................................................................................................................ 39

4.2 DEPTH OF PREPARATION AND DESIGN THROAT THICKNESS OF BUTT

WELDS ..................................................................................................................... 39

4.3 JOINT PREPARATION DIMENSIONS ................................................................... 51

4.4 SURFACE FINISH AND CONTOUR OF BUTT WELDS ....................................... 54

4.5 BACKING RUN OR BACKING WELDS ................................................................ 55

4.6 JOINT WITH BACKING .......................................................................................... 58

4.7 JOINT WITH SPACER............................................................................................. 59

4.8 CONVENTION FOR BACK GOUGING AFTER WELDING ONE SIDE............... 61

SECTION 5 SYMBOLS FOR SURFACING

5.1 GENERAL ................................................................................................................ 62

5.2 USE OF SURFACING SYMBOL ............................................................................. 62

5.3 SIZE (THICKNESS) OF SURFACES BUILT UP BY WELDING ........................... 62

5.4 EXTENT, LOCATION, AND ORIENTATION OF SURFACES BUILT UP BY

WELDING ................................................................................................................ 62

5.5 SURFACING A WELD FACE.................................................................................. 64

SECTION 6 SYMBOLS FOR EDGE WELDING

6.1 GENERAL ................................................................................................................ 65

6.2 EDGE WELD SIZE................................................................................................... 65

6.3 SINGLE- AND DOUBLE-EDGE WELDS ............................................................... 65

6.4 EDGE WELDS REQUIRING COMPLETE JOINT PENETRATION....................... 65

6.5 EDGE WELDS ON JOINTS WITH MORE THAN TWO MEMBERS..................... 65

6.6 LENGTH OF EDGE WELDS ................................................................................... 65

6.7 INTERMITTENT EDGE WELDS ............................................................................ 65 Lice

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AS 1101.3—2005 4

4

SECTION 7 SYMBOLS FOR PLUG WELDING

7.1 GENERAL ................................................................................................................ 70

7.2 SIZE OF PLUG WELDS........................................................................................... 71

7.3 ANGLE OF COUNTERSINK ................................................................................... 72

7.4 DEPTH OF FILLING ................................................................................................ 72

7.5 SPACING OF PLUG WELDS................................................................................... 72

7.6 SURFACE CONTOUR OF PLUG WELDS.............................................................. 74

SECTION 8 SYMBOLS FOR SLOT WELDING

8.1 GENERAL ................................................................................................................ 75

8.2 DEPTH OF FILLING ................................................................................................ 77

8.3 DETAILS OF SLOT WELDS ................................................................................... 77

8.4 SURFACE FINISH AND CONTOUR OF SLOT WELDS........................................ 79

SECTION 9 SYMBOLS FOR SPOT WELDING

9.1 GENERAL ................................................................................................................ 80

9.2 SIZE AND STRENGTH OF SPOT WELDS............................................................. 82

9.3 SPACING OF SPOT WELDS ................................................................................... 82

9.4 EXTENT OF SPOT WELDING ................................................................................ 82

9.5 NUMBER OF SPOT WELDS ................................................................................... 84

9.6 GROUPED SPOT WELDS ....................................................................................... 85

9.7 FLUSH SPOT-WELDED JOINTS ............................................................................ 85

9.8 MULTIPLE-JOINT SPOT WELDS .......................................................................... 86

SECTION 10 SYMBOLS FOR SEAM WELDING

10.1 GENERAL ................................................................................................................ 87

10.2 SIZE AND STRENGTH OF SEAM WELDS............................................................ 89

10.3 LENGTH OF SEAM WELDS ................................................................................... 90

10.4 DIMENSIONING OF INTERMITTENT SEAM WELDS ........................................ 91

10.5 ORIENTATION OF SEAM WELDS ........................................................................ 92

10.6 FLUSH SEAM-WELDED JOINTS........................................................................... 92

10.7 MULTIPLE-JOINT SEAM WELDS ......................................................................... 92

SECTION 11 SYMBOLS FOR STUD WELDING

11.1 SIDE SIGNIFICANCE.............................................................................................. 93

11.2 STUD SIZE ............................................................................................................... 93

11.3 SPACING OF STUD WELDS................................................................................... 93

11.4 NUMBER OF STUD WELDS................................................................................... 93

11.5 DIMENSION LOCATION ........................................................................................ 94

11.6 LOCATION OF FIRST AND LAST STUD WELDS................................................ 94

SECTION 12 SYMBOLS FOR BRAZED JOINTS

12.1 GENERAL ................................................................................................................ 95

12.2 JOINT PREPARATION ............................................................................................ 96

SECTION 13 SYMBOLS FOR NON-DESTRUCTIVE EXAMINATION

13.1 BASIC SYMBOLS.................................................................................................... 98

13.2 GENERAL PROVISIONS....................................................................................... 100

13.3 METHODS OF SPECIFYING EXTENT OF NON-DESTRUCTIVE

EXAMINATION ..................................................................................................... 103

APPENDICES

A ABBREVIATIONS OF TERMS FOR WELDING AND ALLIED PROCESSES ... 106

B DESIGN OF STANDARD SYMBOLS................................................................... 110

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5 AS 1101.3—2005

www.standards.com.au Standards Australia

STANDARDS AUSTRALIA

Australian Standard



S E C T I O N 1 S C O P E A N D G E N E R A L

1.1 SCOPE

This Standard describes symbols that provide the means of placing complete welding

information on drawings. It covers the details of symbols and requirements for their

application in various welding processes (including brazing), and non-destructive

examination.

NOTE: Appendix A gives a listing of abbreviations normally used for welding and allied

processes.

1.2 REFERENCED DOCUMENTS

The following Standard is referred to in this Standard:

AS

2812 Welding, brazing and cutting of metals—Glossary of terms

1.3 DEFINITIONS

For the purpose of this Standard, the definitions given in AS 2812 shall apply.

1.4 DESIGN AND DIMENSIONS OF STANDARD SYMBOLS

The design and dimensions of standard symbols shall be as shown in Appendix B.

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AS 1101.3—2005 6

Standards Australia www.standards.com.au

6

S E C T I O N 2 B A S I C P R I N C I P L E S

2.1 BASIC SYMBOLS

2.1.1 Distinction between weld symbol and welding symbol

This Standard makes a distinction between the terms weld symbol and welding symbol. The

weld symbol (see Figure 2.1) indicates the type of weld. The welding symbol (see

Figure 2.3) is a method of representing the weld symbol on drawings, and includes

supplementary information and consists of the following eight elements:

(a) Reference line (shown horizontally).

(b) Arrow.

(c) Basic weld symbols.

(d) Dimensions and other data.

(e) Supplementary symbols.

(f) Finish symbols.

(g) Tail.

(h) Specification, process, or other references.

NOTE: Not all of the above elements need to be used unless required for clarity.

2.1.2 Illustrations

Examples given, including dimensions (in millimetres), are illustrative only and are

intended to facilitate communications. They are not intended to represent best design

practices or to replace code or specification requirements.

2.1.3 Basic weld symbols

Basic weld symbols shall be as shown in Figure 2.1. The symbols shall be drawn ‘on’ the

reference line (shown dotted).

2.1.4 Supplementary symbols

Supplementary symbols to be used in connection with welding symbols shall be as shown in

Figure 2.2.

2.1.5 Standard location of elements of a welding symbol

The elements of a welding symbol shall have standard locations with respect to each other

as shown in Figure 2.3. Specification and process references should be shown in the tail of

the welding symbol.

2.2 BASIC TYPES OF JOINTS AND WELDS

2.2.1 Basic types of joints

The basic types of joints are shown in Figure 2.4.

2.2.2 Applicable welds

Applicable welds in basic types of joints are listed in Figure 2.4.

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7 AS 1101.3—2005


FIGURE 2.1 BASIC WELD SYMBOLS

FIGURE 2.2 SUPPLEMENTARY SYMBOLS

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AS 1101.3—2005 8


8

FIG

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9 AS 1101.3—2005


FIGURE 2.4 BASIC TYPES OF JOINTS

2.3 GENERAL PROVISIONS

2.3.1 Location significance of arrow

2.3.1.1 General

The location significance of the arrow is shown in Figure 2.5.

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AS 1101.3—2005 10


10

FIGURE 2.5 LOCATION SIGNIFICANCE OF ARROW

2.3.1.2 Butt, fillet, and flange weld symbols

For symbols for butt, fillet, and flange welds, the arrow shall connect the welding symbol

reference line to one side of the joint and this side shall be considered the arrow side of the

joint. The side opposite the arrow side of the joint shall be considered the other side of the

joint (see Figure 2.6).

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11 AS 1101.3—2005


FIGURE 2.6 APPLICATION OF ARROW SIDE AND OTHER SIDE CONVENTION

2.3.1.3 Plug, slot, spot, seam and projection weld symbols

For symbols for plug, slot, spot, seam, and projection welds, the arrow shall connect the

weld symbol reference line to the outer surface of one of the members of the joint at the

centre-line of the desired weld. The member towards which the arrow points shall be

considered the arrow side member. The other member of the joint shall be considered the

other side member. (See figures cited in Sections 7 to 10 inclusive.)

2.3.1.4 Symbols with no side significance

Some weld symbols have no arrow side or other side significance, although supplementary

symbols used in conjunction with them may have significance (see Figure 2.7 and

Clauses 9.1.2 and 9.1.4). Lice

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AS 1101.3—2005 12


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FIGURE 2.7 SYMBOLS WITH NO SIDE SIGNIFICANCE

2.3.2 Location of weld with respect to joint

2.3.2.1 Arrow side

Welds on the arrow side of the joint shall be shown by placing the weld symbol on the side

of the reference line towards the reader (see Figure 2.8 and Clause 2.3.1.1).

FIGURE 2.8 WELDS ON ARROW SIDE

2.3.2.2 Other side

Welds on the other side of the joint shall be shown by placing the weld symbol on the side

of the reference line away from the reader (see Figure 2.9 and Clause 2.3.1.1).

FIGURE 2.9 WELDS ON OTHER SIDE

2.3.2.3 Both sides

Welds on both sides of the joint shall be shown by placing weld symbols on both sides of

the reference line, towards and away from the reader (see Figure 2.10 and Clause 2.3.1.1).

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13 AS 1101.3—2005


FIGURE 2.10 WELDS ON BOTHS SIDES

2.3.3 Method of drawing symbols

Symbols may be drawn mechanically or freehand, as desired. Symbols intended to appear in

publications or otherwise to be of high precision may be drawn with the dimensions and

proportions shown in Appendix B.

2.3.4 Location of a specification, procedure, process, or other reference

2.3.4.1 Symbols with references

Where a specification, procedure, process, or other reference is used with a welding

symbol, the reference shall be placed in the tail (see Figure 2.11).

FIGURE 2.11 REFERENCE LOCATION

2.3.4.2 Symbols without reference

Where desired, symbols may be used without specification, process, or other references in

the following instances:

(a) Where a note such as the following appears on the drawing:

‘Unless otherwise designated, all welds are to be made in accordance with

Specification No. ….’

(b) Where the welding procedure to be used is prescribed elsewhere, such as in shop

instructions and process sheets.

2.3.4.3 General notes

Where desired, general notes such as the following may be placed on a drawing to provide

detailed information pertaining to the pre-dominant welds:

‘Unless otherwise indicated, all fillet welds are 6 mm in size.’

‘Unless otherwise indicated, root gaps for all butt welds are 3 mm.’

The information need not be repeated on the symbols.

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AS 1101.3—2005 14


14

2.3.4.4 Process indication

Where use of a definite process is required, the process shall be indicated by letter

designations.

NOTE: See Appendix A for abbreviations of terms for welding and allied processes.

FIGURE 2.12 PROCESS INDICATION

2.3.4.5 Symbol without tail

Where no specification, process, or other reference is used with a welding symbol, the tail

may be omitted.

2.3.5 Site weld symbol

Site welds (welds not made in a shop or at the place of initial construction) shall be

indicated by means of the site weld symbol. The flag shall point away from the arrow. (See

Figure 2.13.)

FIGURE 2.13 USE OF SITE WELD SYMBOL

2.3.6 Symbol for complete penetration from one side

2.3.6.1 Use

The symbol for complete penetration from one side shall be used only where complete joint

or member penetration plus reinforcement is required in welds made from one side only

(see Figure 2.14).

2.3.6.2 Location

The symbol for complete penetration from one side shall be placed on the side of the

reference line opposite to the weld symbol (see Figure 2.14).

2.3.6.3 Dimensions

Dimensions of complete penetration need not be shown on the welding symbol. If it is

desired to specify height of reinforcement, it shall be shown on the drawing (see

Figure 2.14).

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15 AS 1101.3—2005


FIGURE 2.14 APPLICATION OF SYMBOL FOR COMPLETE PENETRATION

FROM ONE SIDE

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AS 1101.3—2005 16


16

2.3.7 Contour and surface finish methods for complete penetration from one side

2.3.7.1 Flush contour

Complete penetration welds from one side that is to be made flush by mechanical means

shall be shown by adding both the flush contour symbol and the required finish symbol to

the symbol for complete penetration from one side (see Clause 2.3.10 and Figure 2.15).

FIGURE 2.15 INDICATION OF FLUSH CONTOUR

2.3.7.2 Convex contour

Complete penetration welds from one side that is to be mechanically finished to a convex

contour shall be shown by adding both the convex contour symbol and the required finish

symbol to the symbol for complete penetration from one side (see Clause 2.3.10 and

Figure 2.16).

FIGURE 2.16 INDICATION OF CONVEX CONTOUR

2.3.8 Extent of welding denoted by symbols

2.3.8.1 Abrupt changes

Symbols apply between abrupt changes in the direction of the welding or to the extent of

hatching or dimension lines, except where the weld-all-around symbol is used (see

Figures 2.19 and 2.20).

2.3.8.2 Hidden joints

Where the welding of the hidden joint is the same as that of the visible joint, the welding on

hidden joints may be covered, as shown in Figure 2.17. In such case, a section is desirable

but is not necessary. The drawing shall indicate the presence of hidden members. If the

welding on the hidden point is different from that of the visible joint, specific information

for the welding of both shall be given. If needed for clarification, auxiliary illustrations or

views shall be added.

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17 AS 1101.3—2005


DIMENSIONS IN MILLIMETRES

FIGURE 2.17 EXAMPLE OF HIDDEN JOINT

2.3.8.3 Approximate location

Where the exact location of the weld is not critical, it may be indicated as in Figure 2.19(d).

2.3.8.4 Use of weld-all-around symbol

Welds extending completely around a joint shall be indicated by the weld-all-around

symbol (see Figure 2.18).

Welds that are completely around a joint that includes more than one type of weld,

indicated by a combination weld symbol, shall be designated by the weld-all-around

symbol. Welds completely around a joint in which the metal intersections at the points of

welding are in more than one plane shall also be indicated by the weld-all-around symbol

(see Figure 2.20(c)).

FIGURE 2.18 USE OF WELD-ALL-AROUND SYMBOL

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AS 1101.3—2005 18


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FIGURE 2.19 DESIGNATION OF LOCATION AND EXTENT OF FILLET WELDS

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19 AS 1101.3—2005


FIGURE 2.20 (in part) DESIGNATION OF EXTENT OF WELDING

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AS 1101.3—2005 20


20


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21 AS 1101.3—2005



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AS 1101.3—2005 22


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FIGURE 2.21 APPLICATION OF CRANK IN ARROW OF WELDING SYMBOL

(BEVEL-BUTT WELD)

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23 AS 1101.3—2005


FIGURE 2.22 APPLICATION OF CRANK IN ARROW OF WELDING SYMBOL

(J-BUTT WELD)

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AS 1101.3—2005 24


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FIGURE 2.23 COMBINATION OF WELD SYMBOLS SHOWING CRANK IN ARROW

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25 AS 1101.3—2005


FIGURE 2.24 APPLICATION OF ELECTROGAS WELDING AND ELECTROSLAG

WELDING WITH COMBINATION OF WELD SYMBOLS

2.3.9 Weld continuity

Unless otherwise indicated, all welds shall be continuous.

2.3.10 Finishing of welds

Finishing of welds, other than cleaning, shall be indicated by suitable contour and finish

symbols. The following finishing symbols indicate the method, not the degree of finish:

(a) C — Chipping.

(b) G — Grinding.

(c) M — Machining.

(d) R — Rolling.

(e) P — Peening.

(See Clauses 2.3.7, 3.9, 4.4, 4.5.3, 7.6, 8.4, 9.6 and 10.6.)

2.3.11 Construction of symbols

Fillet, bevel and J-butt, flare-bevel-butt, and corner-flange weld symbols shall be shown

with the perpendicular leg always to the left (see Figure 2.25).

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AS 1101.3—2005 26


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FIGURE 2.25 CONSTRUCTION OF SYMBOLS

2.3.12 Crank in arrow

Where one member of a joint is to be prepared, the arrow shall point with a definite crank

towards that member (see Figure 2.26, and also Figures 2.21 and 2.22).

FIGURE 2.26 CRANK IN ARROW

2.3.13 Reading of information on welding symbols

Information on welding symbols shall be placed to read from left to right along the

reference line in accordance with the usual conventions of drafting.

2.3.14 Combined weld symbols

For joints having more than one weld, a symbol shall be shown for each weld (see


2.3.15 Complete penetration

The letters ‘CP’ in the tail of the arrow indicate a complete penetration weld regardless of

the type of weld or joint preparation (see Clause 4.2.7 and Figure 4.14).

2.3.16 Designation of special types of weld

Where the basic weld symbols are inadequate to indicate the desired weld, the weld shall be

shown by a cross-section, detail, or other data with a reference thereto on the welding

symbol in accordance with the location conventions given in Clause 2.3.1 (see Figure 2.27).

FIGURE 2.27 DESIGNATIONS OF SPECIAL WELD TYPES

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27 AS 1101.3—2005


2.3.17 Multiple reference lines

2.3.17.1 Sequence of operations

Two or more reference lines may be used to indicate a sequence of operations. The first

operation is shown on the reference line nearest the arrow. Subsequent operations are

shown sequentially on other reference lines. (See Figure 2.28.)

FIGURE 2.28 INDICATION OF SEQUENCE OF OPERATION

2.3.17.2 Supplementary data

Additional reference lines may be used to show data supplementary to welding symbol

information included on the reference line nearest to the arrow (see Figure 2.29).

FIGURE 2.29 USE OF ADDITIONAL REFERENCE LINE FOR SUPPLEMENTARY DATA

2.3.17.3 Test information

Test information may be shown on a second or third reference line away from the arrow as

described in Section 12.

2.3.17.4 Supplementary symbols

Where required, the weld-all-around symbol or test-all-around symbol shall be placed at the

junction of the arrow line and reference line for each operation to which it is applicable.

The site weld symbol may also be applied in the same manner. (See Figure 2.30.)

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AS 1101.3—2005 28


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FIGURE 2.30 USE OF SUPPLEMENTARY SYMBOL WITH MULTIPLE

REFERENCE LINE

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29 AS 1101.3—2005


S E C T I O N 3 S Y M B O L S F O R F I L L E T W E L D S

3.1 GENERAL

3.1.1 Dimensioning fillets

Dimensions of fillet welds shall be shown on the same side of the reference line as the weld

symbol (see Figures 2.19, 3.4 and 3.5).

3.1.2 Symbols with no general note

Where no general note governing the dimensions of fillet welds appears on the drawing, the

dimensions of fillet welds on both sides of the joint shall be shown (see Figures 3.1

and 3.2).

FIGURE 3.1 WELDS WITH SAME DIMENSIONS

FIGURE 3.2 WELDS WITH DIFFERENT DIMENSIONS

3.1.3 Symbols with general note

Where a general note appears on the drawing governing the dimensions of fillet welds, such

as ‘unless otherwise indicated, all fillet welds are 8 mm in size’, the dimensions of fillet

welds need not be shown on the symbol.

3.2 SIZE OF FILLET WELDS

3.2.1 Location

The size of a fillet weld shall be shown to the left of the weld symbol (see Figure 3.4(a),

(b), (c) and (d)).

NOTE: Examples shown in Figure 3.4 are for joints without root gaps. For root gaps caused by

workmanship tolerances, the appropriate application standard should be followed for fillet weld

sizes.

3.2.2 Unequal legs

The size of a fillet weld with unequal legs shall be indicated to the left of the weld symbol.

Weld orientation is not indicated by the symbol and shall be shown on the drawing when

necessary. (See Figure 3.4(d).)

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AS 1101.3—2005 30


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3.2.3 Minimum size

Unless otherwise indicated, the deposited fillet weld size shall be not less than the size

shown on the drawing.

3.2.4 Penetration

Where penetration for a given root opening is specified, as in Figure 3.8(a), the inspection

method for determining penetration depth is to be included in the applicable specification.

3.3 LENGTH OF FILLET WELDS

3.3.1 Location

The length of a fillet weld, where indicated on the welding symbol, shall be shown to the

right of the weld symbol (see Figure 3.3 and Figure 3.4(f)).

FIGURE 3.3 LENGTH OF FILLET WELDS

3.3.2 Abrupt changes

Where fillet welding extends for the full distance between abrupt changes in the direction of

the welding (see Clause 2.3.8), no length dimension need be shown on the welding symbol

(see Figure 3.4(e)).

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31 AS 1101.3—2005


FIGURE 3.4 APPLICATION OF DIMENSIONS TO FILLET WELD SYMBOLS

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AS 1101.3—2005 32


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FIGURE 3.5 APPLICATION OF DIMENSIONS TO INTERMITTENT FILLET

WELD SYMBOLS

3.3.3 Specific lengths

Specific lengths of fillet welding may be indicated by symbols in conjunction with

dimension lines (see Figure 3.6, and also Figure 2.19(a) and (c)).

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33 AS 1101.3—2005


FIGURE 3.6 INDICATION OF SPECIFIC LENGTHS OF FILLET WELDS

3.4 EXTENT OF FILLET WELDING

3.4.1 Hatching

Where it is desired to shown the extent of fillet welding graphically, the location of the

weld may be shown by hatching (see Figure 3.7).

FIGURE 3.7 EXTENT OF FILLET WELDING SHOWN BY HATCHING

3.4.2 Welds beyond abrupt changes

Fillet welding extending beyond abrupt changes in the direction of the welding shall be

indicated by means of additional arrows pointing to each section of the joint to be welded,

as shown in Figure 2.20(a), except where the weld-all-around symbol is used.

3.5 DIMENSIONING OF INTERMITTENT FILLET WELDING

Dimensioning of intermittent fillet welding shall be as follows:

(a) The pitch (centre-to-centre spacing) of intermittent fillet welding shall be shown as

the distance between centres of increments on one side of the joint (see Figure 3.5).

(b) The pitch (centre-to-centre spacing) of intermittent fillet welding shall be shown to

the right of the length dimension (see Figure 3.5).

(c) Dimensions of chain intermittent fillet welding shall be shown on both sides of the

reference line. Chain intermittent fillet welds shall be opposite each other as shown in

Figure 3.5(b).

(d) Dimensions of staggered intermittent fillet welding shall be shown on both sides of

the reference line using the convention shown in Figure 3.5(c).

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AS 1101.3—2005 34


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3.6 TERMINATION OF INTERMITTENT FILLET WELDING

3.6.1 Intermittent fillets only

Where intermittent fillet welding is used by itself, the symbol indicates that increments

shall be located at the ends of the dimensioned length (see Figure 2.19(b)).

3.6.2 Intermittent welds between continuous welds

Where intermittent fillet welding is used between continuous fillet welds, the symbol

indicates that spaces equal to the pitch minus the length of one increment shall be left at the

ends of the dimensioned length (see Figures 2.19(a) and 3.5(a)).

3.7 COMBINATION OF INTERMITTENT AND CONTINUOUS FILLET

WELDING

Separate welding symbols shall be used for intermittent and continuous fillet welding where

the two are used in combination along one side of the joint (see Figure 2.19(a)).

3.8 FILLET WELDS IN HOLES AND SLOTS

Fillet welds in holes and slots shall be shown by means of fillet weld symbols (see

Figure 3.8(b)).

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35 AS 1101.3—2005


FIGURE 3.8 (in part) APPLICATION OF FILLET WELD SYMBOLS

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AS 1101.3—2005 36


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FIGURE 3.8 (in part) APPLICATION OF FILLET WELD SYMBOLS

3.9 SURFACE FINISH AND CONTOUR OF FILLET WELDS

3.9.1 Contours obtained by welding

Fillet welds that are to be welded approximately flat, convex, or concave, without recourse

to any method of finishing, shall be shown by adding the flush, convex, or concave contour

symbol to the weld symbol, in accordance with the location conventions given in

Clause 2.3.1 (see Figure 3.9).

FIGURE 3.9 INDICATION OF WELD CONTOUR WITHOUT MECHANICAL MEANS

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37 AS 1101.3—2005


3.9.2 Flat contour by mechanical means

Fillet welds that are to be made flat faced by mechanical means shall be shown by adding

both the flush contour symbol and the required finish symbol to the weld symbol, in

accordance with the location conventions given in Clause 2.3.1 (see Clause 2.3.10 and

Figure 3.10).

FIGURE 3.10 FLAT CONTOUR BY MECHANICAL MEANS

3.9.3 Convex contour by mechanical means

Fillet welds that are to be mechanically finished to a convex contour shall be shown by

adding both the convex contour symbol and the required finish symbol to the weld symbol,

in accordance with the location conventions given in Clause 2.3.1 (see Clause 2.3.10 and

Figure 3.11).

FIGURE 3.11 CONVEX CONTOUR BY MECHNICAL MEANS

3.9.4 Concave contour by mechanical means.

Fillet welds that are to be mechanically finished to a concave contour shall be shown by

adding both the concave contour symbol and the required finish symbol to the weld symbol,

in accordance with the location conventions given in Clause 2.3.1 (see Clause 2.3.10 and

Figure 3.12).

FIGURE 3.12 CONCAVE CONTOUR BY MECHANICAL MEANS

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AS 1101.3—2005 38


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3.10 SKEWED JOINTS

Where the angle between fusion faces is such that the identification of the type of weld and

hence the proper weld symbol is in question, the detail of the desired joint and weld

configuration shall be shown on the drawing.

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39 AS 1101.3—2005


S E C T I O N 4 S Y M B O L S F O R B U T T W E L D S

4.1 GENERAL

4.1.1 Dimension location

Dimensions showing preparation of butt welds shall be indicated on the same side of the

reference line as the weld symbol (see Figure 4.2, and also Figure 4.1).

FIGURE 4.1 APPLICATION OF DIMENSIONS TO BUTT WELD SYMBOLS

(BUTT WELD SYMBOL SHOWING USE OF COMBINED DIMENSIONS)

4.1.2 Double-butt dimensions

Where no general note governing the dimensions of welds appears on the drawing, the

dimensions of double-butt welds shall be shown on both welds (see Figures 4.3 and 4.4).

4.1.3 Cranked arrow

For bevel-butt, J-butt and corner flange welds, a cranked arrow shall be used to indicate

which member is prepared, as described in Clause 2.3.12 (see Figure 4.5).

4.1.4 Dimensions in general note

Where a general note appears on the drawing governing the dimensions of butt welds, such

as ‘unless otherwise noted, all V-butt welds shall have a 60° groove angle’, and neither butt

weld need be dimensioned.

4.2 DEPTH OF PREPARATION AND DESIGN THROAT THICKNESS OF BUTT

WELDS

4.2.1 Location

The depth of groove preparation (S) and design throat thickness (D) of a butt weld shall be

shown to the left of the weld symbol (see Figures 4.6 to 4.9). Lice

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AS 1101.3—2005 40


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4.2.2 Complete joint penetration required

Where no depth of groove preparation or design throat thickness is shown on the welding

symbol for single-butt and symmetrical double-butt welds, complete joint penetration is

required (see Figure 4.6(d) and (e)).

FIGURE 4.2 DIMENSIONS LOCATION FOR BUTT WELDS

FIGURE 4.3 WELDS WITH SAME DIMENSIONS

FIGURE 4.4 WELDS WITH DIFFERENT DIMENSIONS

FIGURE 4.5 USE OF CRANKED ARROW

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41 AS 1101.3—2005


FIGURE 4.6 DESIGNATION OF DESIGN THROAT THICKNESS OF BUTT WELDS

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AS 1101.3—2005 42


42

FIGURE 4.7 EXAMPLES OF DIFFERENT RELATIONSHIPS BETWEEN DEPTH

OF PREPARATION ‘S’ AND DESIGN THROAT THICKNESS (D)

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43 AS 1101.3—2005



WITH SPECIFIED DEPTH OF PREPARATION

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AS 1101.3—2005 44


44


WITHOUT SPECIFIED DEPTH OF PREPARATION

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45 AS 1101.3—2005


FIGURE 4.10 DESIGNATION OF DESIGN THROAT THICKNESS

OF COMBINED WELDS

4.2.3 Partial joint penetration specified, depth of preparation not specified

The design throat thickness of butt welds that extend only partly through the member or

members being joined shall be shown in parentheses on the welding symbol (see

Figure 4.11, and also Figure 4.7(a), (b), (c) and (d)).

FIGURE 4.11 PARTIAL JOINT PENETRATION

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AS 1101.3—2005 46


46

4.2.4 Depth of preparation specified, design throat thickness not specified, or

specified elsewhere

A dimension not in parentheses placed to the left of the symbol for a bevel weld, V-butt

weld, J-butt weld, or U-butt weld indicates only the depth of preparation (see Figure 4.12).

FIGURE 4.12 INDICATION OF DEPTH OF PREPARATION ONLY

4.2.5 Depth of preparation and design throat thickness specified

Except for square-butt welds, the design throat thickness (D) in relation to the depth of

groove preparation S shall be shown to the left of the weld symbol. The design throat

thickness (D) only is shown for the square-butt weld. (See Figure 4.13 and Figures 4.8, 4.9

and 4.10.) The design throat thickness (D) shall always be enclosed in brackets.

In no case shall the total design throat thickness exceed the thickness of the thinner member

of the weld joint.

FIGURE 4.13 INDICATION OF DEPTH OF PREPARATION AND

DESIGN THROAT THICKNESS

4.2.6 Special case of requirement of Clause 4.2.5—Design throat thickness where

specified less than depth of preparation

Where it is desired to indicate a design throat thickness (D) less than the depth of

preparation S, (D) is shown less than S on the welding symbol (see Figures 4.7(c) and 4.16).

4.2.7 Joint preparation optional, complete penetration required

Contract design drawings, or other drawings where conditions dictate, may allow optional

joint preparation with complete joint penetration required by placing the letters ‘CP’ in the

tail of the arrow and omitting the weld symbol (see Figure 4.14).

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47 AS 1101.3—2005


FIGURE 4.14 COMPLETE PENETRATION REQUIRED,

JOINT PREPARATION OPTIONAL

4.2.8 Joint preparation optional, design throat thickness specified

For contract design drawings where conditions dictate, the design throat thickness may be

specified by placing the dimension D on the arrow side or other side of the reference line as

required but omitting the weld symbol (see Figure 4.15).

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AS 1101.3—2005 48


48

FIGURE 4.15 PARTIAL PENETRATION SPECIFIED, JOINT PREPARATION OPTIONAL

4.2.9 Flare-butt welds

The dimension S of flare-butt welds is considered as extending only to the tangent points

indicated below by dimension lines (see Figure 4.16).

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49 AS 1101.3—2005


FIGURE 4.16 (in part) APPLICATION OF FLARE-BEVEL-BUTT AND FLARE-V-BUTT

WELD SYMBOLS

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AS 1101.3—2005 50


50

FIGURE 4.16 (in part) APPLICATION OF FLARE-BEVEL-BUTT AND FLARE-V-BUTT

WELD SYMBOLS

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51 AS 1101.3—2005


4.3 JOINT PREPARATION DIMENSIONS

4.3.1 Root gap

The root gap of butt welds shall be shown inside the weld symbol (see Figure 4.17).

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AS 1101.3—2005 52


52

FIGURE 4.17 DESIGNATION OF ROOT GAP OF BUTT WELDS

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53 AS 1101.3—2005


4.3.2 Preparation angle

The preparation angle of butt welds shall be shown outside the weld symbol (see

Figure 4.18).

FIGURE 4.18 DESIGNATION OF PREPARATION ANGLE OF BUTT WELDS

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AS 1101.3—2005 54


54

4.3.3 Radii and root faces

Radii and land of U-butt and J-butt welds shall be shown by a cross-section, detail, or other

data, with reference thereto on the welding symbol, in accordance with the location

conventions given in Clause 2.3.1 (see Figure 4.19).

FIGURE 4.19 EXAMPLES OF INDICATING DETAILS OF RADII AND ROOT FACES

4.4 SURFACE FINISH AND CONTOUR OF BUTT WELDS

4.4.1 Contours obtained by welding

Butt welds that are to be welded approximately flush, without recourse to any method of

finishing, shall be shown by adding the flush contour symbol to the weld symbol, in

accordance with the location conventions given in Clause 2.3.1 (see Figure 4.20 and

Figure 4.25(a)).

FIGURE 4.20 INDICATION OF FLUSH CONTOUR WITHOUT MECHANICAL MEANS

4.4.2 Flush contour by mechanical means

Butt welds that are to be made flush by mechanical means shall be shown by adding both

the flush contour symbol and the required finish symbol to the weld symbol, in accordance

with the location conventions given in Clause 2.3.1 (see Figure 4.21, Figure 4.25 and

Clause 2.3.10).

FIGURE 4.21 INDICATION OF FLUSH CONTOUR BY MECHANICAL MEANS

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55 AS 1101.3—2005


4.4.3 Convex contour by mechanical means

Butt welds that are to be mechanically finished to a convex contour shall be shown by

adding both the convex contour symbol and the required finish symbol to the weld symbol,

in accordance with the location conventions given in Clause 2.3.1 (see Figure 4.22,

Figure 4.25(c) and Clause 2.3.10).

FIGURE 4.22 INDICATION OF CONVEX CONTOUR BY MECHANICAL MEANS

4.5 BACKING RUN OR BACKING WELDS

4.5.1 General

The backing run or backing weld symbol shall be used to indicate bead type backing run or

backing welds or single-butt welds (see Figure 4.26).

4.5.2 Backing run or backing weld symbol

Backing runs or backing welds of single-butt welds shall be shown by placing a backing run

or backing weld symbol on the side of the reference line opposite the butt weld symbol (see

Figure 4.23 and also Figure 4.26).

FIGURE 4.23 USE OF BACKING RUN OR BACKING WELD SYMBOL

4.5.3 Surface contour of backing run or backing welds

4.5.3.1 Contours obtained by welding

Backing run or backing welds that are to be welded approximately flush without recourse to

any method of finishing shall be shown by adding the flush contour symbol to the backing

run or backing weld symbol (see Figure 4.24).

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AS 1101.3—2005 56


56

FIGURE 4.24 INDICATION OF FLUSH CONTOUR WITHOUT MECHANICAL MEANS

FIGURE 4.25 APPLICATION OF FLUSH AND CONVEX CONTOUR SYMBOLS

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57 AS 1101.3—2005


FIGURE 4.26 APPLICATION OF BACKING RUN OR BACKING WELD SYMBOL WITH

AND WITHOUT GOUGING

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AS 1101.3—2005 58


58

4.5.3.2 Flush contour by mechanical means

Backing runs or backing welds that are to be made flush by mechanical means shall be

shown by adding both the flush contour symbol and the required finish symbol to the

backing run or backing weld symbol (see Figure 4.27 and Clause 2.3.10).

FIGURE 4.27 INDICATION OF FLUSH CONTOUR BY MECHANICAL MEANS

4.5.3.3 Convex contour by mechanical means

Backing run or backing welds that are to be mechanically finished to a convex contour shall

be shown by adding both the convex contour symbol and the required finish symbol to the

backing run or backing weld symbol (see Figure 4.28 and Clause 2.3.10).

FIGURE 4.28 INDICATION OF CONVEX CONTOUR BY MECHANICAL MEANS

4.6 JOINT WITH BACKING

A joint with backing shall be shown as a combination of the butt weld symbol on one side

of the reference line and a rectangle on the opposite side in which shall be included one of

two notations as shown in Figure 4.29.

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59 AS 1101.3—2005


FIGURE 4.29 JOINT WITH BACKING

4.7 JOINT WITH SPACER

A joint with spacer shall be shown with the butt weld symbol modified to show a rectangle

within it, and the rectangle shall include a notation as shown in Figure 4.30.

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AS 1101.3—2005 60


60

FIGURE 4.30 JOINTS WITH SPACERS

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61 AS 1101.3—2005


4.8 CONVENTION FOR BACK GOUGING AFTER WELDING ONE SIDE

A second reference line may be used (see Clause 2.3.17) for a second operation, which

cannot be performed until after the first is completed. Back gouging and welding as a

second operation are thus indicated as shown in Figure 4.31.

FIGURE 4.31 INDICATION OF BACK GOUGING AFTER WELDING

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AS 1101.3—2005 62


62

S E C T I O N 5 S Y M B O L S F O R S U R F A C I N G

5.1 GENERAL

The surfacing symbol shall be used to indicate surfaces built up by welding for such

purposes as the following:

(a) Correcting dimensions.

(b) Transition between dissimilar metals.

(c) Corrosion resistance.

(d) Wear resistance.

NOTE: See Figure 5.1.

5.2 USE OF SURFACING SYMBOL

5.2.1 Symbol application

Surfaces built up by welding, whether by single-pass or multiple-pass surfacing welds, shall

be shown by the surfacing symbol (see Figure 5.1).

5.2.2 Arrow side significance

The surfacing symbol does not indicate the welding of a joint and, therefore, has no arrow

or other side significance. The symbol shall be drawn beneath the reference line and the

arrow shall point clearly to the surface on which the weld is to be deposited. (See

Figure 5.1.)


Dimensions used in conjunction with the surfacing symbol shall be shown on the same side

of the reference line as the weld symbol (see Figure 5.1).

5.3 SIZE (THICKNESS) OF SURFACES BUILT UP BY WELDING

5.3.1 Minimum thickness

The size of a surface to be built up by welding shall be indicated by showing the minimum

thickness of the weld deposit to the left of the weld symbol (see Figure 5.1(a)).

5.3.2 Unspecified thickness

Where no specific thickness of weld deposit is desired, no size dimension need be shown on

the welding symbol.

5.4 EXTENT, LOCATION, AND ORIENTATION OF SURFACES BUILT UP BY

WELDING

5.4.1 Entire area

Where the entire area of a plane or curved surface is to be built up by welding, no

dimension other than size (thickness of deposit) need be shown on the welding symbol (see

Figure 5.1(c)).

5.4.2 Portion of area

Where a portion of the area of a plane or curved surface is to be built up by welding, the

extent, location and orientation of the area to be built up shall be indicated on the drawing

(see Figure 5.1(d)).

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63 AS 1101.3—2005


FIGURE 5.1 APPLICATION OF SURFACING TO INDICATE SURFACES

BUILT UP BY WELDING

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AS 1101.3—2005 64


64

5.5 SURFACING A WELD FACE

Where it is desired to show a subsequent surfacing operation over another weld, the

multiple reference line concept may be used with a fillet weld or butt weld as the first

operation and the surfacing operation the second (see Figure 5.2 and Clause 2.3.17).

FIGURE 5.2 SURFACING A WELD FACE

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65 AS 1101.3—2005


S E C T I O N 6 S Y M B O L S F O R E D G E W E L D I N G

6.1 GENERAL

The edge welding symbol shall be used to specify edge welds on edge joints and flanged

butt or flanged corner joints. The full thickness of the joint members shall be fused. Flange

dimensions are considered part of the drawing and not specified by the welding symbol.

(See Figure 6.1.)

6.2 EDGE WELD SIZE

When specified, the edge weld size shall be indicated by a dimension placed to the left of

the edge weld symbol and on the same side of the reference line. If a specific edge weld

size is not required, the dimension may be omitted (see Figure 6.1(a) and (b)).

6.3 SINGLE- AND DOUBLE-EDGE WELDS

Single-edge welds may be specified on edge, flanged butt and flanged corner joints (see

Figures 6.1(b), (c) and (d)). Double-edge welds are only applicable to edge joints (see

Figure 6.1(a)). An edge weld may be combined with a flare-bevel or flare-V groove weld if

welds are required on both sides of a flanged butt or flanged corner joint (see Clause 4.2.9).

6.4 EDGE WELDS REQUIRING COMPLETE JOINT PENETRATION

Edge welds requiring complete joint penetration shall be specified for either flanged butt or

flanged corner joints by the edge weld symbol with the complete penetration symbol placed

on the opposite side of the reference line (see Figures 6.1(e), (f) and (i)). No size

specification for the edge weld is necessary when combined with the complete penetration

symbol.

6.5 EDGE WELDS ON JOINTS WITH MORE THAN TWO MEMBERS

Edge welds can be specified for edge joints, flanged butt joints, or flanged corner joints

having more than two members by using the edge weld symbol in the same manner as for

joints having two members (see Figure 6.1(g), (h) and (i)).

6.6 LENGTH OF EDGE WELDS

The length of an edge weld, when indicated on the welding symbol, shall be specified to the

right of the weld symbol.

When an edge weld is to extend for the full length of the joint, no length dimension need be

specified on the welding symbol.

Specific lengths of edge welds and their location may be specified by symbols in

conjunction with dimension lines.

Hatching may be used to graphically depict edge welds.

6.7 INTERMITTENT EDGE WELDS

6.7.1 Pitch

The pitch of intermittent edge welds shall be the distance between the centres of adjacent

weld segments on one side of the joint.

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AS 1101.3—2005 66


66

6.7.2 Pitch dimension location

The pitch of intermittent edge welds shall be specified to the right of the length dimension

following a hyphen.

6.7.3 Chain intermittent edge welds

Dimensions of chain intermittent edge welds shall be specified on both sides of the

reference line. The segments of chain intermittent edge welds shall be opposite one another

across the joint.

6.7.4 Staggered intermittent edge welds

Dimensions of staggered intermittent edge welds shall be specified on both sides of the

reference line, and the edge weld symbols shall be offset on opposite sides of the reference

line as shown below. The segments of staggered intermittent edge welds shall be

symmetrically spaced on both sides of the joint.

6.7.5 Extent of welding

In the case of intermittent edge welds, additional weld lengths that are intended at the ends

of the joint shall be specified by separate welding symbols and dimensioned on the

drawing. When no weld lengths are intended at the ends of the joint, the unwelded lengths

should not exceed the clear distance between weld segments and be so dimensioned on the

drawing.

6.7.6 Location of intermittent welds

When the location of intermittent welds is not obvious, such as on a circular weld joint,

specific segment locations by dimension lines or by hatching shall be provided.

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67 AS 1101.3—2005


FIGURE 6.1 (in part) APPLICATION OF EDGE WELD SYMBOL

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AS 1101.3—2005 68


68


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69 AS 1101.3—2005



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AS 1101.3—2005 70


70

S E C T I O N 7 S Y M B O L S F O R P L U G W E L D I N G

7.1 GENERAL

7.1.1 Arrow side holes

Holes in the arrow side member of a joint to be plug welded shall be indicated by placing

the weld symbol on the side of the reference line toward the reader (see Figure 7.1(a)).

7.1.2 Other side holes

Holes in the other side member of a joint to be plug welded shall be indicated by placing

the weld symbol on the side of the reference line away from the reader (see Figure 7.1(b)).

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71 AS 1101.3—2005


FIGURE 7.1 APPLICATION OF PLUG WELD SYMBOL

7.1.3 Dimensions

Dimensions of plug welds shall be shown on the same side of the reference line as the weld


7.1.4 Fillets in holes

The plug weld symbol shall not be used to designate fillet welds in holes (see Clause 3.8).

7.2 SIZE OF PLUG WELDS

The size of a plug weld shall be shown to the left of the weld symbol (see Figure 7.2(a)).

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AS 1101.3—2005 72


72

7.3 ANGLE OF COUNTERSINK

Included angle of countersink of plug welds shall be shown on the symbol (see

Figure 7.2(b)).

7.4 DEPTH OF FILLING

Unless otherwise indicated, the depth of filling of plug welds shall be complete. Where the

depth of filling is less than complete, it shall be shown inside the weld symbol. (See

Figure 7.2(c).)

7.5 SPACING OF PLUG WELDS

Pitch (centre-to-centre) of plug welds shall be shown to the right of the weld symbol (see

Figure 7.2(d)).

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73 AS 1101.3—2005


FIGURE 7.2 APPLICATION OF DIMENSIONS TO PLUG WELD SYMBOLS

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AS 1101.3—2005 74


74

7.6 SURFACE CONTOUR OF PLUG WELDS

7.6.1 Flush welds without finishing

Plug welds that are to be welded approximately flush without recourse to any method of

finishing shall be shown by adding the flush contour symbol to the weld symbol (see

Figure 7.3).

FIGURE 7.3 FLUSH CONTOUR WITHOUT MECHANICAL MEANS

7.6.2 Flush welds mechanically finished

Plug welds that are to be made flush by mechanical means shall be shown by adding both

the flush contour symbol and the required finish symbol to the weld symbol (see Figure 7.4

and Clause 2.3.10).

FIGURE 7.4 FLUSH CONTOUR BY MECHANICAL MEANS

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75 AS 1101.3—2005


S E C T I O N 8 S Y M B O L S F O R S L O T W E L D I N G

NOTE: This Section applies only to slot welds that are partially or completely filled. For fillet

welds in slots, see Clause 3.8.

8.1 GENERAL

8.1.1 Arrow side slots

Slots in the arrow side member of a joint to be slot welded shall be indicated by placing the

weld symbol on the side of the reference line toward the reader (see Figure 8.1(a)).

8.1.2 Other side slots

Slots in the other side member of a joint to be slot welded shall be indicated by placing the

weld symbol on the side of the reference line away from the reader (see Figure 8.1(b)).

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AS 1101.3—2005 76


76

FIGURE 8.1 APPLICATION OF SLOT WELD SYMBOL

8.1.3 Dimensions

Dimensions of slot welds shall be shown on the same side of the reference line as the weld


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77 AS 1101.3—2005


8.2 DEPTH OF FILLING

Unless otherwise indicated, the depth of filling of slot welds shall be complete. Where the

depth of filling is less than complete, the depth of filling shall be shown inside the weld

symbol. (See Figure 8.2(b).)

8.3 DETAILS OF SLOT WELDS

Length, width, spacing, included angle of countersink, orientation, and location of slot

welds cannot be shown on the welding symbol. These data shall be shown on the drawing or

by a detail with a reference thereto on the welding symbol, in accordance with the location

conventions given in Clause 2.3.1. (See Figure 8.2.)

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AS 1101.3—2005 78


78

FIGURE 8.2 APPLICATION OF DIMENSIONS TO SLOT WELD SYMBOL

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79 AS 1101.3—2005


8.4 SURFACE FINISH AND CONTOUR OF SLOT WELDS

8.4.1 Flush welds without mechanical means

Slot welds that are to be welded approximately flush without recourse to any method of

finishing shall be shown by adding the flush contour symbol to the weld symbol (see

Figure 8.3).

FIGURE 8.3 FLUSH CONTOUR WITHOUT MECHANICAL MEANS

8.4.2 Flush welds mechanically finished

Slot welds that are to be made flush by mechanical means shall be shown by adding both

the flush contour symbol and the required finish symbol to the weld symbol (see Figure 8.4

and Clause 2.3.10).

FIGURE 8.4 FLUSH CONTOUR WITH MECHANICAL MEANS

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AS 1101.3—2005 80


80

S E C T I O N 9 S Y M B O L S F O R S P O T W E L D I N G

9.1 GENERAL


The spot weld symbol, in accordance with its location in relation to the reference line, may

or may not have arrow side or other side significance, depending on the process used.


Dimensions shall be shown on the same side of the reference line as the symbol, or on

either side where the symbol is located astride the reference line and has no arrow side or

other side significance (see Figure 9.1 and Figure 9.2).

FIGURE 9.1 DIMENSION LOCATION FOR SPOT WELD

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81 AS 1101.3—2005


FIGURE 9.2 APPLICATION OF SPOT WELD SYMBOL

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AS 1101.3—2005 82


82

9.1.3 Process reference

The process reference shall be indicated in the tail of the welding symbol (see

Clause 2.3.4.4).

9.1.4 Projection welds

Where projection welding is to be employed, the spot weld symbol shall be used with the

projection welding process reference in the tail of the welding symbol. The spot weld

symbol shall be centred above or below (not on) the reference line to designate in which

member the embossment is placed, in accordance with the location conventions given in

Clause 2.3.1.

9.2 SIZE AND STRENGTH OF SPOT WELDS

Spot welds shall be dimensioned by either size or strength as follows:

(a) Size The size of spot welds shall be designated as the diameter of the weld, and shall

be shown to the left of the weld symbol (see Figure 9.3(a)).

(b) Strength The strength of spot welds shall be designated in Newtons per spot, and

shall be shown to the left of the weld symbol (see Figure 9.3(b)).

9.3 SPACING OF SPOT WELDS

The pitch (centre-to-centre spacing) of spot welds shall be shown to the right of the weld

symbol (see Figure 9.3(c)).

9.4 EXTENT OF SPOT WELDING

Where spot welding extends less than the distance between abrupt changes in the direction

of the welding, or less than the full length of the joint (see Clause 2.3.8), the extent shall be

dimensioned (see Figure 9.3(d)).

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83 AS 1101.3—2005


FIGURE 9.3 (in part) APPLICATION OF DIMENSIONS TO SPOT WELD SYMBOLS

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AS 1101.3—2005 84


84

FIGURE 9.3 (in part) APPLICATION OF DIMENSIONS TO SPOT WELD SYMBOLS

9.5 NUMBER OF SPOT WELDS

Where a definite number of spot welds is desired in a certain joint, the number shall be

shown in parentheses either above or below the weld symbol (see Figure 9.4 and

Figure 9.3(e)).

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85 AS 1101.3—2005


FIGURE 9.4 INDICATION OF NUMBER OF SPOT WELDS

9.6 GROUPED SPOT WELDS

A group of spot welds may be located on a drawing by intersecting centre-lines, with the

arrows pointing to at least one of the centre-lines passing through each weld location (see

Figure 9.5).

FIGURE 9.5 GROUPED SPOT WELDS

9.7 FLUSH SPOT-WELDED JOINTS

Where the exposed surface of either member of a spot-welded joint is to be flush, that

surface shall be indicated by adding the flush contour symbol to the weld symbol, in

accordance with the location conventions given in Clause 2.3.1 (see Figure 9.6).

FIGURE 9.6 FLUSH SPOT WELDS

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AS 1101.3—2005 86


86

9.8 MULTIPLE-JOINT SPOT WELDS

For spot welds, where one or more pieces are inserted between the two outer pieces, the

same symbol as for the two outer pieces shall be used regardless of the number of pieces

inserted.

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87 AS 1101.3—2005


S E C T I O N 1 0 S Y M B O L S F O R S E A M W E L D I N G

10.1 GENERAL


The seam weld symbol, in accordance with its location in relation to the reference line, may

or may not have arrow side or other side significance, depending on the process used.

10.1.2 Dimensions

Dimensions shall be shown on the same side of the reference line as the symbol, or on

either side where the symbol is located astride the reference line and has no arrow side or

other side significance (see Figure 10.1 and Figure 10.2.)

FIGURE 10.1 DIMENSIONING SEAM WELD

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AS 1101.3—2005 88


88

FIGURE 10.2 APPLICATION OF SEAM WELD SYMBOL Lice

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89 AS 1101.3—2005


10.1.3 Process reference

The process reference shall be indicated in the tail of the welding symbol.

NOTE: For symbols relating to process, see Appendix A.

10.2 SIZE AND STRENGTH OF SEAM WELDS

Seam welds shall be dimensioned by either size or strength as follows:

(a) Size The size of seam welds shall be designated as the width of the weld expressed

in millimetres and shall be shown to the left of the weld symbol (see Figure 10.3(a)).

(b) Strength The strength of seam welds shall be designated in Newtons per millimetre

and shall be shown to the left of the weld symbol (see Figure 10.3(b)).

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AS 1101.3—2005 90


90

FIGURE 10.3 APPLICATION OF DIMENSIONS TO SEAM WELD SYMBOLS

10.3 LENGTH OF SEAM WELDS


The length of seam, where indicated on welding symbols, shall be shown to the right of the

weld symbol (see Figure 10.4 and Figure 10.3(a)). Lice

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91 AS 1101.3—2005


FIGURE 10.4 DIMENSION LOCATION FOR SEAM WELDS

10.3.2 Abrupt changes

Where a seam weld extends the full distance between abrupt changes in the direction of the

welding (see Clause 2.3.8), no length dimension need be shown on the welding symbol.

10.3.3 Specific lengths

Where a seam weld extends less than the distance between abrupt changes in the direction

of the welding, or less than the full length of the joint, the extent shall be dimensioned (see

Figure 10.5 and Figure 10.3(c)).

FIGURE 10.5 SPECIFIC LENGTH OF SEAM WELD

10.4 DIMENSIONING OF INTERMITTENT SEAM WELDS

10.4.1 Pitch distance

The pitch (centre-to-centre spacing) of intermittent seam welds shall be shown as the

distance between centres of the weld increments.


The pitch (centre-to-centre spacing) of intermittent seam welds shall be shown to the right

of the length dimension (see Figure 10.6 and Figure 10.3(a)).

FIGURE 10.6 DIMENSION LOCATION FOR INTERMITTENT SEAM WELDS

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AS 1101.3—2005 92


92

10.5 ORIENTATION OF SEAM WELDS

10.5.1 Intermittent welds

Unless otherwise indicated, intermittent seam welds shall be interpreted as having length

and pitch measured parallel to the axis of the weld (see Figure 10.3(a)).

10.5.2 Showing orientation

Where the orientation of seam welds is not as in Clause 10.5.1, a detailed drawing shall be

used to show the weld orientation (see Figure 10.7).

FIGURE 10.7 ORIENTATION OF SEAM WELD

10.6 FLUSH SEAM-WELDED JOINTS

Where the exposed surface of either member of a seam-welded joint is to be flush, that

surface shall be indicated by adding the flush contour symbol to the weld symbol, in

accordance with the location conventions given in Clause 2.3.1 (see Figure 10.8).

FIGURE 10.8 FLUSH SEAM WELDS

10.7 MULTIPLE-JOINT SEAM WELDS

For seam welds, where one or more pieces are inserted between the two outer pieces, the

symbol used for the two outer pieces shall be used regardless of the number of pieces

inserted.

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93 AS 1101.3—2005


S E C T I O N 1 1 S Y M B O L S F O R S T U D W E L D I N G

11.1 SIDE SIGNIFICANCE

The stud welding symbol has arrow-side significance only. The symbol shall be placed

below the reference line, and the arrow shall point clearly to the surface to which the stud is

to be welded (see Figure 11.1).

FIGURE 11.1 SIDE SIGNIFICANCE

11.2 STUD SIZE

The required diameter of the stud shall be specified to the left of the weld symbol (see


FIGURE 11.2 STUD SIZE

11.3 SPACING OF STUD WELDS

The pitch (centre-to-centre distance) of stud welds in a straight line shall be specified to the

right of the weld symbol (see Figures 11.3 and 11.5). The spacing of stud welds in any

configuration other than a straight line shall be dimensioned on the drawing.

FIGURE 11.3 SPACING OF STUD WELDS

11.4 NUMBER OF STUD WELDS

The number of stud welds shall be specified in parentheses below the stud weld symbol (see


FIGURE 11.4 NUMBER OF STUD WELDS

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AS 1101.3—2005 94


94

11.5 DIMENSION LOCATION

Dimensions shall be placed on the same side of the reference line as the stud weld symbol

(see Figure 11.5).

11.6 LOCATION OF FIRST AND LAST STUD WELDS

The location of the first and last stud weld in each single line shall be specified on the

drawing (see Figure 11.5).

FIGURE 11.5 APPLICATIONS OF STUD WELD SYMBOL

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95 AS 1101.3—2005


S E C T I O N 1 2 S Y M B O L S F O R B R A Z E D

J O I N T S

12.1 GENERAL

Application of conventional welding symbols to brazed joints shall be as illustrated in

Figure 12.1. Figure 12.1(a) to (e) show how joint clearances can be indicated.

FIGURE 12.1 (in part) APPLICATION OF BRAZING SYMBOLS

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AS 1101.3—2005 96


96

FIGURE 12.1 (in part) APPLICATION OF BRAZING SYMBOLS

12.2 JOINT PREPARATION

If no special joint preparation other than cleaning is required, only the arrow shall be used

with the brazing process indicated in the tail (see Figure 12.2).

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97 AS 1101.3—2005


FIGURE 12.2 BRAZING JOINTS WITH NO SPECIAL PREPARATION

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AS 1101.3—2005 98


98

S E C T I O N 1 3 S Y M B O L S F O R N O N -

D E S T R U C T I V E E X A M I N A T I O N

13.1 BASIC SYMBOLS

13.1.1 Basic examination symbols

Basic non-destructive examination symbols shall be as follows:

Type of examination Symbol

Acoustic emission AEE

Eddy current EE

Leak LE

Magnetic particle ME

Neutron radiographic NRE

Penetrant PE

Proof PRE

Radiographic RE

Ultrasonic UE

Visual VE

13.1.2 Elements of the examination symbol

The examination symbol consists of the following elements:

(a) Reference line:

Arrow.

Basic examination symbol.

Examine-all-around symbol.

Number of tests (N).

Examination in site.

(b) Tail:

Specification or other reference.

13.1.3 Standard location of elements

The elements of an examination symbol shall have standard locations with respect to each

other as shown in Figure 13.1.

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99 AS 1101.3—2005


FIG

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13

.1

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AS 1101.3—2005 100


100

13.2 GENERAL PROVISIONS

13.2.1 Location significance of arrow

The arrow shall connect the reference line to the part to be examined. The side of the part to

which the arrow points shall be considered the arrow side of the part. The side opposite the

arrow side of the part shall be considered the other side.

13.2.2 Location of examination symbol

13.2.2.1 Arrow side location

Examinations to be made on the arrow side of the part shall be indicated by the examination

symbol on the side of the reference line towards the reader (see Figure 13.2).

FIGURE 13.2 EXAMINATIONS ON ARROW SIDE

13.2.2.2 Other side location

Examinations to be made on the other side of the part shall be indicated by the examination

symbol on the side of the reference line away from the reader (see Figure 13.3).

FIGURE 13.3 EXAMINATIONS ON OTHER SIDE

13.2.2.3 Symbols on both sides

Examinations to be made on both sides of the part shall be indicated by examination

symbols on both sides of the reference line (see Figure 13.4).

FIGURE 13.4 EXAMINATIONS ON BOTH SIDES

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101 AS 1101.3—2005


13.2.2.4 Centred symbols

Where non-destructive examination symbols have no arrow or other side significance, the

testing symbols shall be centred on the reference line (see Figure 13.5).

FIGURE 13.5 EXAMINATIONS WITH NO ARROW OR OTHER SIDE SIGNIFICANCE

13.2.3 Direction of radiation

Where specified, the direction of radiation may be shown in conjunction with the

radiographic and neutral radiographic examination symbols. The direction of radiation may

be indicated by a symbol located on the drawing at the desired angle (see Figure 13.6).

FIGURE 13.6 DIRECTION OF RADIATION

13.2.4 Combination of non-destructive examination symbols and welding symbols

13.2.4.1 Welding and non-destructive examination symbols

Non-destructive examination symbols and welding symbols may be combined as shown in

Figure 13.7.

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AS 1101.3—2005 102


102

FIGURE 13.7 EXAMPLES OF COMBINATION OF WELD SYMBOLS AND NON-

DESTRUCTIVE EXAMINATION SYMBOLS

13.2.4.2 Non-destructive examination symbols alone

Non-destructive examination symbols may be combined as shown in Figure 13.8.

FIGURE 13.8 EXAMPLES OF COMBINATION OF SYMBOLS FOR NON-DESTRUCTIVE

EXAMINATION ALONE

13.2.4.3 Arrow side significance

Where a non-destructive examination symbol having no arrow or other side significance is

combined with a symbol having such significance, the examination symbols may be

combined (see Figure 13.9).

FIGURE 13.9 EXAMPLES OF COMBINATION OF SYMBOLS WITH ARROW SIDE

SIGNIFICANCE AND NO ARROW OR OTHER SIDE SIGNIFICANCE

13.2.5 Use of references

Specifications or other references need not be used on examination symbols where the

examination procedure is prescribed elsewhere. Where a specification or other reference is

used with an examination symbol, the reference shall be placed in the tail (see

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103 AS 1101.3—2005


FIGURE 13.10 USE OF REFERENCES

13.3 METHODS OF SPECIFYING EXTENT OF NON-DESTRUCTIVE

EXAMINATION

13.3.1 Specifying length of section to be examined

13.3.1.1 Length shown

To specify examinations of welds on parts where only the length of a section need be

considered, the length shall be shown to the right of the basic examination symbol (see

Figure 13.11).

FIGURE 13.11 SHOWING LENGTH OF SECTION TO BE EXAMINED

13.3.1.2 Location shown

To show the exact location of a section to be examined as well as its length, dimension lines

shall be used (see Figure 13.12).

FIGURE 13.12 SHOWING LOCATION OF SECTION TO BE EXAMINED

13.3.1.3 Examination of full length

Where the full length of a part is to be examined, no length dimension need be shown on

the examination symbol.

13.3.1.4 Partial examination

Where less than the total length of a weld is to be examined with locations to be selected by

a specified procedure, the percentage of the length to be examined shall be indicated (see

Figure 13.13).

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AS 1101.3—2005 104


104

13.3.2 Specifying number of examinations

To specify a number of examinations to be taken on a joint or part at random locations, the

number of desired examinations shall be shown in parentheses (see Figure 13.14).

FIGURE 13.14 SHOWING NUMBER OF EXAMINATION

13.3.3 Specifying examinations made all around a joint

To specify examinations to be made all around a joint, the examine-all-around symbol shall

be used (see Figure 13.15).

FIGURE 13.15 EXAMINE-ALL-AROUND

13.3.4 Specifying examination of parts (areas)

Non-destructive examination of parts (areas) shall be indicated by one of the following

methods:

(a) Plane areas For non-destructive examination of an area represented as a plane on

the drawing, the area to be examined shall be enclosed by straight broken lines having

a circle at each change of direction. The examination symbol specifying the kind of

non-destructive examination shall be used in connection with these lines as shown in

Figure 13.16. Where necessary, these enclosures shall be located by coordinate

dimensions.

FIGURE 13.16 PLANE AREAS

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105 AS 1101.3—2005


(b) Areas of revolution For non-destructive examination of areas of revolution, the area

shall be indicated by using the examine-all-around symbol and appropriate

dimensions. On Figure 13.17(a), the upper symbol indicates that the bore of the

flange is to be subjected to a magnetic particle examination for a distance of 80 mm

from the face, all the way around. The lower symbol indicates an area of revolution to

be subjected to radiographic examination where dimensions are not available on

drawing.

The symbols in Figure 13.17(b) indicate an area of revolution subject to an internal

proof test and an external eddy current examination. Since no dimensions are given,

the entire length is to be examined.

FIGURE 13.17 AREAS OF REVOLUTION

13.3.5 Acoustic emission

Acoustic emission is generally applied to all or a large portion of a component, such as a

pressure vessel or pipe. The symbol indicates application of AEE to the component without

specific reference to location of sensors (see Figure 13.18).

FIGURE 13.18 ACOUSTIC EMISSION

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AS 1101.3—2005 106


106

APPENDIX A

ABBREVIATIONS OF TERMS FOR WELDING AND ALLIED PROCESSES

(Informative)

TABLE A1

DESIGNATION OF WELDING AND

ALLIED PROCESSES BY LETTERS

Welding and allied process Letter designation

Arc welding AW

carbon-arc welding CAW

electrogas welding EGW

flux cored arc welding FCAW

gas metal arc welding GMAW

gas tungsten arc welding GTAW

manual metal arc welding MMAW

plasma arc welding PAW

stud welding SW

submerged arc welding SAW

Brazing B

dip brazing DB

flame brazing FLB

furnace brazing FB

induction brazing IB

resistance brazing RB

silver brazing SB

Other welding processes

electron-beam welding EBW

electroslag welding ESW

induction welding IW

laser-beam welding LBW

thermit welding TW

oxy-acetylene welding OAW

Resistance welding RW

high frequency resistance welding HFRW

percussion welding PEW

projection welding RPW

resistance seam welding RSEW

resistance spot welding RSW

(continued)

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107 AS 1101.3—2005


Welding and allied process Letter designation

Soldering S

dip soldering DS

furnace soldering FS

induction soldering IS

iron soldering INS

resistance soldering RS

Solid state welding SSW

diffusion welding DFW

explosion welding EXW

forge welding FOW

friction welding FRW

hot pressure welding HPW

roll welding ROW

ultrasonic welding USW

Thermal cutting TC

air arc gouging AAG

arc cutting AC

carbon-arc cutting CAC

flame gouging FG

gas metal arc cutting GMAC

metal-arc cutting MAC

plasma arc cutting PAC

electron-beam cutting EBC

laser-beam cutting LBC

oxy-fuel gas cutting OFC

oxygen-arc cutting AOC

Thermal spraying THSP

flame spraying FLSP

plasma spraying PSP

TABLE A1 (continued)

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AS 1101.3—2005 108


108

TABLE A2

ALPHABETICAL CROSS-REFERENCE TO TABLE A1

Letter designation Welding and allied processes

AAG air arc gouging

AC arc cutting

AOC oxygen-arc cutting

AW arc welding

B brazing

CAC carbon-arc cutting

CAW carbon-arc welding

DB dip brazing

DFW diffusion welding

DS dip soldering

EBC electron-beam cutting

EBW electron-beam welding

EGW electrogas welding

ESW electroslag welding

EXW explosion welding

FB furnace brazing

FG flame gouging

FCAW flux cored arc welding

FLB flame brazing

FLSP flame spraying

FOW forge welding

FRW friction welding

FS furnace soldering

GMAC gas metal arc cutting

GMAW gas metal arc welding

GTAW gas tungsten arc welding

HFRW high frequency resistance welding

HPW hot pressure welding

IB induction brazing

INS iron soldering

IS induction soldering

IW induction welding

LBC laser-beam cutting

LBW laser-beam welding

MAC metal-arc welding

MMAW manual metal arc welding

OAW oxy-acetylene welding

OFC oxy-fuel gas cutting

PAC plasma arc cutting

PAW plasma arc welding

(continued)

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109 AS 1101.3—2005


Letter designation Welding and allied processes

PEW percussion welding

PSP plasma spraying

RB resistance brazing

RPW projection welding

RS resistance soldering

RSEW resistance seam welding

RSW resistance spot welding

ROW roll welding

RW resistance welding

S soldering

SAW submerged arc welding

SB silver brazing

SSW solid state welding

SW stud welding

TC thermal cutting

THSP thermal spraying

TW thermit welding

USW ultrasonic welding

TABLE A2 (continued)

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AS 1101.3—2005 110


110

APPENDIX B

DESIGN OF STANDARD SYMBOLS

(Normative)

NOTES TO FIGURES B1 TO B22:

1 All dimensions in millimetres.

2 Unless otherwise specified, tolerance shall be ±1 mm or ±1°, as applicable.

3 All radii are minimum.

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111 AS 1101.3—2005


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AS 1101.3—2005 112


112

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113 AS 1101.3—2005


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AS 1101.3—2005 114

114

NOTES

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115 AS 1101.3—2005

NOTES

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AS 1101.3—2005 116

116

NOTES

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AS 1101.3-2005 Graphical symbols for general engineering ...

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