Handrailing

Handrailing

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CONTENTS1. FOREWORDS 32. STRUCTURE 43. CODING 54. RELEVANT SIZE 65. MATERIAL AND FINISH 76. SINGLE BALL JOINT HANDRAILING 87. TWO BALLS JOINT HANDRAILING 98. THREE BALLS JOINT HANDRAILING 10 9. FOUR BALLS JOINT HANDRAILING 11 10. BENDS CLOSURES AND KICKPLATES 12 11. ONE SIDE DRILLED STANCHION CHAIN GATE AND SELF CLOSING GATE 13 12. STAINLESS STEEL BALL JOINT HANDRAILING 14 13. ALUMINUM BALL JOINT HANDRAILING 15 14. MANUFACTURES AND TOLERANCES 16 15. INSTALLATION 17 16. STANDARDS 18

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Handrailing

Handrailing, or named Guard-rails,

Parapets, Balustrades,Barriers is one security

device for protection against accidental fall or accidental access to a hazardous area. It is installed on stairs, step ladders or landings,

platforms, sides of bank, pool, pit and walkways. The handrailing shall be installed near to the

dangerous areas where is a fall risk of passage through.

There is one type of ball joint handrail, the ball-pipe structure stanchion, combined with rails

and toe plates, composing the safety, beautiful and easy erection handrails -

DAHE ball joint handrailing.

In October of 1993, DAHE ball joint handrailing was first appeared in

Beijing Building Exhibition.In June of 1994, the first batch of DAHE ball joint

handrailing was started installation in Guangdong Shajiao C Power Station.

In September of 1995, DAHE ball joint handrailing was awarded the patent by state.

In October of 199 has been awarded ISO 9000 QMS certificate.

Over ten years, DAHE handrails was widely used in many industrial areas, municipal

engineering, such as power plant, chemical plant, foodstuff and drink plant, water supply and

sewage treatment plant, field and park, river bank and dock etc.

In recent years, DAHE handrails were supplied for so many power stations throughout China,

just like numerous stars twinkling.

Look up stars sky and have a sudden fancy,

why not link DAHE handrailing

with the moon as make a belt for our

beautiful moon.

DAHE handrails Neither arrogant nor proud, neither

escape hot summer nor fear cold winter,

nor scare wind blow, nor wave as grass

bend,but silently,responsibly, stably

stand guard for peopleand stand guard for future.

Wish people live longevity and enjoybeauty together though far apart.

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STRUCTURE OF DAHE BALL JOINT HANDRAILING

STANCHION

TOP RAIL MID RAIL __

____

___

KICKPLATE

____

___

BALL

___

____

____

____

__

___

BEAM

____

__

HORIZONTAL CLOSURE

____

___

ANGLE CLOSURE ___

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Handrailing

CODE OF DAHE HANDRAILING

Classify according to designed load capability

Type Symbol Capable withstand concentrated load

light duty handrail L 250N

standard duty handrail* 500N

heavy duty handrail H 1500N

* 500N

Classify according to quantity of ball

Single ball joint handrailing 1

Two balls joint handrailing 2

Three balls joint handrailing 3

Four balls joint handrailing 4

.Classify according to fixing type of stanchion

Top mounted (base plate) stanchion P

Side mounted stanchion S

Collar stanchion C

Welding fixed stanchion W

Offset handrail stanchion H

( ) One side drilled stanchion

(drilled left hand side and drilled right hand side only) O (OL & OR)

Side mounted bended leg stanchion SB

Angle base stanchion A

Angle rail stanchion A

L 3 SB ORLOAD CLASS------

BALL QUANTITY--------

FIXING TYPE----------------------

SPECIAL NOTES-------------------------------

----

-

----

----

--

----

----

----

---

----

----

----

----

----

-

Examples: L3SBOR---- 250 N

Light duty three balls side mounting and bended leg and right one side drilled stanchion (horizontal load 250N)

2PAA ------- 500 N Standard duty two balls angle base and angle rails stanchion (horizontal load 500N) H3SBAL--- 1500N

Hight duty left side mounting and bended leg and angle rails stanchion (horizontal load 1500N)

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Handrailing

RELEVANT SIZE OF HANDRAILING

mm

Ball O.D. Stanchion pipe O.D. Top rail O.D. Mid rail O.D.

68 42.3 33.5 26.8 or 33.5

75 48 33.5 or 42.3 26.8 or 33.5

85 48 or 60 42.3 33.5

95 60 48 33.5

120 75.5 60 33.5

mm

stanchion hight span

single ball 350 1000

two ball 1100 1000

three ball 1200 1000

four ball 1500 1000

mm

light duty

standard duty

heavy duty

The values in this table can not be used as evidence for receipt goods or arbitration. It is for reference only.

LOAD AND DIMENSION

HIGHT AND SPAN

SIZE OF HANDRAILING

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Handrailing

MATERIAL . GB700-1988 Q235A

BS4360-43A

. ( P 14 )

. ( P 15 )

1. Mild steel -- low carbon steel is conform to Chinese standard

GB700-1998.Q235-A. and British standard BS 4360 grade 43A

2. Stainless steel as page14

3. Aluminum as page15

FINISH, GB/T 13912-2002

Hot dipped galvanization's surface of treatment of the mill steel handrailing more and

more improve up the anti-rust capability and less maintenance cost, Hot dip

galvanizing conforms to standard GB/T13912 and BS EN ISO 1461:1999

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Handrailing

DAHE SINGLE BALL HANDRAILING

S INGLE BALL STANCHIONS

1P 1PO 1SOR 1S 1SOL

SINGLE BALL SIDE MOUNTEDSINGLE BALL BASE PLATE

1H 1HOR 1HOL

1PA 1PAA

OFFSET HANDRAIL SINGLE BALL ANGLE

1W 1WA 1WAA

BASE

SIDE

ANGLE

COLLAR

SINGLE BALL WELDEDSTANDARD BASE PLATES

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Handrailing

TWO BALLS STANCHIONS

2P 2PA 2PAA

2C 2CA2W 2WA 2WAA

2S 2S2SAL 2SAR

2SB2SBAL 2SBAR

BASE PLATE COLLAR WELDED

SIDE MOUNTED SIDE MOUNTED BENDED LEG

DAHE TWO BALLS JOINT HANDRAILING

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Handrailing

3P 3PA 3PAA

3C 3CA3W 3WA 3WAA

3S 3SAL 3SAR

3SB

3SBAL 3SBAR

BASE PLATE WELDED

SIDE MOUNTED SIDE MOUNTED BENDED LEG

DAHE THREE BALLS JOINT HANDRAILING

THREE BALLS STANCHIONS

COLLAR

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Handrailing

SIDE MOUNTED BENDED LEGSIDE MOUNTED

BASE PLATE COLLAR WELDED

4SB

4SBAL 4SBAR

4P 4PA 4PAA

4C 4CA 4W 4WA 4WAA

4S 4SAL 4SAR

DAHE FOUR BALLS JOINT HANDRAILING

FOUR BALLS STANCHIONS

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Handrailing

BENDS CLOSURES AND KICKPLATES

BENDS CLOSURES AND JO INERS

K ICKPLATE MOUNT ING BRACKETS

HORIZONTALCLOSURE

ANGLECLOSURE

90 BENDO

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Handrailing

ONE SIDE DRILLED STANCHION CHAIN GATE AND SELF CLOSING GATE

ONE S IDE DR ILLED STANCHION

2PO 2SO 2PAAOL 2PAAOR 2SAOL 2SAOR

CHAIN GATE SELF CLOS ING GATE

SELF CLOSING GATE

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Handrailing

DAHE STAINLESS STEEL BALL JOINT HANDRAILING

In foodstuff & drink industries, water supply , chemical ind. shipboard use, or highly corrosive environments, Dahe Stainless Steel Ball Joint Handrailing is very nice product.

Dahe Stainless Steel Ball Joint Handrailing commonly manufactured in 304 or 316 series alloys.

304 series alloy chemical composition as : Standard No Designation C Si Mn P S Ni Cr Mo

GB/T1220-1992 0Cr18Ni9 0.07 1.00 2.0 0.035 0.030 8.00~11.00 17.00~19.00 BS970 Part

1-1996 304S31 0.07 1.0 2.0 0.045 0.030 8.0~11.0 17.0~19.0

316 series alloy chemical composition as: Standard No Designation C Si Mn P S Ni Cr Mo

GB/T1220-1992 0Cr17Ni12Mo2 0.08 1.00 2.00 0.035 0.030 10.00~14.00 16.00~18.50 2.00~3.00BS970 Part

1-1996 316S31 0.07 1.0 2.0 0.045 0.030 10.5~13.5 16.5~18.5 2.00~2.50

Dahe Stainless Steel Ball Joint Handrailing products surface treatment by polishing.

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Handrailing

DAHE ALUMINUM BALL JOINT HANDRAILING

Dahe ball joint aluminum ball joint handrailing is used as steel ball joint handrailing in water & sewage treatment system, Power Station, shipbuilding ,foodstuff processing ,petroleum & chemical industries ,municipal engineerings, widely appliances .

Aluminum alloy is conform to GB/T 3190-1996 and BS 1474-1987:

Chemical Compositions:Standard Designation Si Fe Cu Mn Mg Cr Ni Zn

6060 0.3-0.6 0.1-0.3 0.10 0.10 0.35-0.6 0.05 - 0.15

6061 0.4-0.8 0.7 0.15-0.40 0.15 0.8-1.2 0.04-0.35 0.25

6063 0.2-0.6 0.35 0.10 0.10 0.45-0.9 0.10 0.10

GB/T3190 BS 1474 EN573-3ISO209-2

6082 0.7-1.3 0.50 0.1 0.4-1.0 0.6-1.2 0.25 0.20

Mechanical Properties:

Designation Tensile strength 0.2% proof stress Elongation

6060-T6 190 150 8

6061-T6 280 240 8

6063-T6 195 160 8

6082-T6 295 255 8

Surface: Anodized to Grade AA 25 in accordance with BS 1615: 1987

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Handrailing

MANUFACTURES AND TOLERANCES1 Hollow Ball

1.1 Hollow ball is seamless forged

structure

1.2 0.5 mm

Hollow ball surface smooth, no corrugation, no crack and out of

round (diameter tolerance) not exceed 0.5mm

2 Base Plate

2.1 1 mm For welded fixing

base plate, the tolerance of length and width shall be no more

than 1mm.

2.2 1.0 mm For

bolted fixing base plate, the tolerance of space between bolt

holes shall be no more than 1mm.

2.3 Base plate shall be with hole for water outlet.

3 Stanchion Pipe

3.1 5 mm The tolerance of stanchion length shall

be no more than 5mm.

3.2 , , ,

+2 mm , 1 mm The holes on

the balls for rails through shall be drilled addition 2mm than

nominal diameter of top rail and mid rail being used. The

tolerance of holes position shall be no more than 1mm.

4 Top Rail

4.1 , ,

Top rail surface shall be smooth, no burrs, no rough

dross, no uncoated black spots or bubble.

4.2 , , ,

The connection between top rails shall be use joiner tube and

then fixed inside of the ball. The joint shall not be exterior.

5 Bend

5.1 , , ,

, 1.5

Horizontal closure bend is used for end of horizontal handrails,

connect top rail and mid rail. It is made from pipe same as the top

rail. The maximum tolerance of angle is 1.5 .

5.2 , , ,

, 1.5 Angle

closure bend is used for end of stair handrails, connect top rail

and mid rail. It is made from pipe same as the top rail. The

maximum tolerance of angel is 1.5 .

5.3 , ,

, ,

1.5 Standard 90 bend is used for corner connection of

horizontal handrails, divided into top rail 90 bend and mid rail

90 bend, which is made from pipe same as top rail and mid rail

respectively. The maximum tolerance of angle is 1.5 .

5.4 ,

, ,

, 1.5 Angle bend is

used for angle corner of horizontal handrails or connection

between horizontal handrail and stair handrails, divided into top

rail angle bend and mid rail angle bend, which is made from pipe

same as top rail and mid rail respectively. The maximum

tolerance of angle is 1.5 .

5.5 ,

3mm All bends shall be no crack, burrs or layer after bending

formed and the inner wavy not exceed 3mm.

6 Toe Plate

6.1 Toe plates shall be supplied in standard

length.

6.2 Dimension

tolerance of toe plates shall be in accordance with specifications

of relevant hot rolled steel coil.

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Handrailing

INSTALLATION1 The handrails shall be installed in

the area where is a fall risk.

2 500mm The handrails shall

be installed when the fall height may exceed 500mm.

3 200mm

30mm If the space between

working platform and plant structure or wall is less than 200mm

and the structures protection equal to the handrails, there is no

need to install handrails. However, if the space between working

platform and adjacent structure is more than 30mm, there shall be

installed toe plates.

4 1500mm

The space of stanchions shall be

limited within 1500mm. If exceeding this space, the special note

shall be taken fixing strength of stanchion and add fixing device.

5 120mm

120mm

, ,

In the conditions of rails stopped, the maximum

clear space between two segment handrails shall be no more than

120mm. If the maximum clear space over 120mm and the

stanchions can not be added convenience, the welding connection

is permitted use same pipes as top rails and mid rails in the same

height, then anti corrosion coating shall be carried out.

6

, 4.9 All entrance and exit shall be installed self

closing gates. The self closing gates shall be with top rails and mid

rails, the height same as handrails. Refer to Drawing 4.9.

a) The self closing gate only can

be opened in single direction.

b) The opened direction

of the self closing gate shall not toward to fall direction.

c)

The self closing gate shall be opened easily.

d) The self closing gate shall be closed

automatically.

7 , ,

1200mm Even

if there is no fall risk, such as stairway with two sides of wall, one

side shall be installed handrail at least. While the width more or

equal 1200mm, both sides of stairway shall be installed handrails.

8 500mm 200mm

When the up height of stairway exceeds

500mm and there is a cross space of over 200m outside of beam, the

side of stairway shall be installed handrails.

9 100mm

There shall be no obstacle holdback people in distance of 100mm

around handrails.

10 , 8mm All

base plates of stanchions shall be welded stably to platform

beams, the fillet weld shall be no less than 8mm.

11

All connections between stanchions ball joints and

rails (top and mid) shall be fixed by taper pins.

12 , Handrails

installation shall be ensured straight and no visible wavy bending.

13

,

Connections between stanchions and rails

(top and mid) shall refer to Ball Joint Handrails – Top Rails, Mid

Rails, Bends Installation Sketch. It is recommended that first feed

top rail and mid rail through ball joint and fit up, then fixing.

14 , ,

After installation, the positions of

galvanization coating destroyed due to welding, cutting,

scratching shall be carried out anti-corrosion coating on site.

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Handrailing

STANDARDS GB 4053.3-1993GB 17888.3-1999

3 :GB 5009-2001 GB 4053.3-1993 Fixed Industrial Protection Handrails - Safety Technical Conditions GB 17888.3-1999 Safety of machinery Permanent means of access to machines and industrial plants Part 3 Stairways stepladders and guard-rails GB 5009-2001 Loading of Building ISO 14122-3-2001 Safety of machinery Permanent means of access to machines and industrial plants Part 3 Stairways stepladders and guard-rails BS 6399-1:1996 Loading of Building Part:1 Dead and imposed loads BS 6180:1995 Barriers in and about buildings AS 1657:1992 Fixed platforms, walkways, stairways and ladders-Design, construction and installation ANSI/NAAMM AMP521-2001 Pipe Railing Systems Manual Including Round Table

SPECIFICATIONS OF STANDARDS FOR HANDRAILS LOADS GB5009-2001 :GB5009-2001 Loading of Building 4.5.2

4.5.2 Stairways, landings, balconies and roofs etc. Top horizontal loads on handrails shall be applied as following: 1.

0.5kN/m1. Dwelling house, lodging house, office, hotel, hospital, nursery, shall be 0.5kN/m 2.

1.0kN/m2. School, dining hall, theatre, cinema, station, auditorium, exhibition hall or sports ground, shall be 1.0kN/m

GB4053.3-93 GB4053.3-93 Fixed Industrial Protection Handrails – Safety Technical Conditions 5.

500N/m5. Intensity requirement Handrails shall be designed to withstand a vertical load of no less than 500N/m applied in horizontal direction GB 17888.3-1999 ISO14122.3-2001

3 :GB 17888.3-1999, ISO14122.3-2001 Safety of machinery Permanent means of access to machines and industrial plants Part 3 Stairways stepladders and guard-rails 7.3. Fmin

30mm Fmin=300N/m x L

L7.3 Intensity Criterion Handrails shall be capable of with standing horizontal load of Fmin or more applied in the most disadvantage point. Under this load, there shall be no permanent distortion and the max. deflection not exceed 30mm.

Fmin=300N/m x L L indicates the max. space between adjacent two stanchions axis ANSI/NAAMM AMP 521-2001 Pipe Railing Systems Manual Including Round Table Handrails: Capable of withstanding following loads applied as indicated.a. Concentrated load of 200 pounds applied at any point in any direction.b. Uniform load of 50 PLF applied in any direction. c. Concentrated and uniform loads above need not be applied simultaneously. AS 1657:1992 Fixed platforms, walkways, stairways and ladders-Design, construction and installation Loads on Handrails. Each handrail shall be designed to withstand each of the following loads acting separately:

a A horizontal force of 550N applied outward at the centre of the span.

b A vertical force of 550N applied downward at the centre of the span.

BS 6399-1:1996 Loading of Building Part:1 Dead and imposed loads Use Intensity of horizontal load N/m

Light access stairs, gangways and the like not more than 600mm wide 220Light access stairs, gangways and the like, more than 600mm widestairways, landings and balconies, private and domestic 360

All other stairways, landings and balconies and all parapets and handrails to roofs 740

BS 6180:1995 Barriers in and about buildings Use Concentrated load kN

1A Single family dwelling (house, maisonette, etc).

6A Factory, workshop, warehousing storage or deposit of goods and materials or parking only of vehicles other than motor vehicles, light traffic routes subject to one-way flow. 0.25

1B Boarding house, guest house, hostel, lodging house, residential club (and communal areas in residential property). 1C Hotel and motel.

2 Those parts of a prison, hospital, school, college or other training establishment or detention centre, not used for assembly purposes. 3C Musem, library, non-residential club, pedestrian area. 4 Office.

6B As 6A, but for escape routes and general routes subject to regular two-way flow.

0.5

3A Designated and non-designated sports grounds. 3B Theatre, cinema, concert hall, discotheque, auditorium, shopping mall.

5Shop, department store, supermarket, public house, restaurant with or without assembly area, café, hairdressers, wholesale or retail warehouse, public area of bank, building society or betting shop.

7A Car parks.

1.5

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Handrailing

FOR DAHE OTHER PRODUCTS CATALOG, PLEASE ASK FOR OUR SALES DEPT.

Some projects in Hong Kong

Siu Ho Wan Sewage Treatment Plant

Shatin Wan Sewage Treatment Plant

Taipo Water Treatment Plant

Stonecutters Bridge

Some projects in local

Yuhuan Power Plant

Zhouxian Power Plant

Taizhou Power Plant

Huilai Power Plant

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