F 0414: 2002

1

JIS F 0414-2002

Shipbuilding - Internal wiring and piping of engine control console 1. Scope This Japanese Industrial Standard specifies internal wiring and piping for use between various devices mounted in marine control equipment intended mainly for engine control, monitoring, and alarms (hereinafter referred to as control console), and those between these devices and external wiring and piping connection points of the control console. 2. Reference standards The following standards form part of this Standard when quoted. The latest edition of these standards shall be applied.

JIS C 1610 Extension and compensating cables for thermocouples JIS C 2805 Crimp-type terminal lugs for copper conductors JIS C 3410 Cables and flexible cords for electrical equipment of ships JIS F 7329 Shipbuilding - Forges steel 40 K globe valves JIS F 7341 Shipbuilding - Forged steel 100 K pressure gauge valves JIS F 7343 Shipbuilding - Bronze 20 K pressure gauge valves JIS F 7379 Shipbuilding - Brass 30 K stop valves with bite joint(s) JIS F 7387 Shipbuilding - Bronze 16 K cocks JIS F 7388 Shipbuilding - Bronze 20 K glove valves JIS F 8813 Shipbuilding - Crimp terminal boards JIS G 3454 Carbon steel pipes for pressure service JIS G 3456 Carbon steel pipes for high temperature service JIS H 3300 Copper and copper alloy seamless pipes and tubes

3. Wiring

3.1 Wiring materials Wires to be used shall conform to the requirements of JIS C 3410, or have equivalent mechanical and

electrical performance, and in addition, conform to Table 1 and the following requirements:

Table 1 Wire classification Application

Nominal sectional area,

mm2

Insulation Voltage V

Circuit type

0.75 ~ 16 0.6/l kV250V

General circuits (Applicable to circuits of 250 V or more) General circuits (Applicable to circuits of less than 250V)

1 ~ 2.5 0.5 ~ 1

Polyvinyl chloride or equivalent

150V a) Circuit for instrumentation, automation, ship internal communications, etc., having circuit protective devices.

b) Circuits without circuit protective devices, in which maximum short-circuit current does not exceed maximum permissible current of wires.

a) Wires subject to motions shall have sufficient flexibility. b) Polyvinyl chloride (PVC) used for wire insulation shall be heat-resistant (temperature rating of

75C). c) Wiring to a part which may reach a high temperature of 70C or more shall be composed of wires for

high temperature applications or shall be of wires with heat shield. d) Sizes (sectional area) of wires shall be selected with an ample allowance considering the passing

current amperage and voltage drop involved. e) In principle, lead wires used for a temperature metering circuit employing a thermocouple or

thermocouples shall be provided with compensation wires conforming to JIS C 1610. f) Wires used for a circuit that is likely to have an influence on or to be influenced by other circuits

through electromagnetic or electrostatic induction, noise, etc., shall be provided with shields. g) Special consideration shall be given to the effects of impedence on special wires used for electronic

equipment.

F 0414: 2002

2

3.2 Terminal boards for external wire connections A terminal board for external wire connections shall conform to the following requirements:

a) A wire terminal shall conform to JIS C 2805 or shall have equivalent mechanical and electrical performance.

b) A terminal board terminal shall conform to JIS F 8813 or shall have equivalent mechanical and electrical performance.

c) Terminal boards shall be provided at a place that permits easy wire connection and maintenance, preferably grouped in each of the divided compartments of the control console.

d) The arrangement of terminal boards shall be as shown in Fig. 1 or Fig. 2 to permit easy connection of external wires.

Unit: mm Unit: mm

Fig. 1 Longitudinal arrangement Fig. 2 Transverse arrangement

e) A terminal board shall be marked with the same code as in the drawing and, if necessary, also with a circuit description or number.

f) Terminals on a terminal board shall be suitably arranged for groups of external wires, preferably in specific application groups. In particular, terminals involving a circuit voltage of 440V or more shall be separated as a block and suitably marked for easy identification. The terminals for an intrinsically safe apparatus contained in the control console shall be spaced 50 mm or more from other terminals or electrically isolated from them by means of a barrier having sufficient strength and insulating properties. Further, these terminals shall be marked to indicate that they are connection terminals for an intrinsically safe circuit.

g) Terminal boards shall be completely isolated from piping joints of steam, water, oil, etc., by means of a partition or protective covering.

h) It is preferable to limit the number of wires to be connected to one terminal on a terminal board to one for external terminal, and two for internal terminal.

i) Terminals on a terminal board for a circuit that does not permit any kind of insulation resistance test or voltage withstand test shall be provided with a suitable warning means, such as by affixing a warning notice.

3.3 Connectors for wires A pair of separable wire connectors shall conform to the following

requirements: a) A connector pair shall be provided with a means to prevent accidental disconnection due to

vibration. b) A connector pair shall be guide-keyed to prevent the connection with incorrect polarity. When two

or more connector pairs of the same type are used, the individual connectors of each pair shall be marked with a match mark or other suitable identifying symbol.

or more Terminal boards Terminal boards

or more or more

or more External wires

Exte

rnal

wire

s

Bottom surface Bottom surface

F 0414: 2002

3

3.4 Wiring procedures Wiring shall be carried out in accordance with the following procedures: a) Wiring shall be grouped and arranged for each circuit or destination as far as practicable. b) The internal radius of a bend shall be four times or more the finished outside diameter of a wire for

insulated stranded-copper wires and two times or more for flexible wires. At places where wires are subjected to repeated flexing, flexible wires shall be used with an internal bending radius of eight times the outside diameter or more.

c) Ducts used for duct wiring shall be flame-resistant, and care shall be exercised so that no insulated stranded copper wires will be subject to mechanical damage at their exit.

d) Where different sizes of wires are placed in the same duct or bundles together, a suitable means shall be provided so that the mechanical strength of the smallest wire or wires will not be impaired.

e) Wires that come out of a duct shall be secured at a suitable position to protect them from any mechanical damage due to vibration at the duct exit or to prevent any vibration from transmitting to the connection terminals.

f) Bands used for cleated or bundled wiring shall be such that no mechanical damage is received by the wires and shall be provided at intervals of 300 mm or less.

g) Where a PVC-insulated stranded-copper wire or wires are secured to a metal body, a protective insulation of rubber, plastic, or equivalent material shall be inserted between the wire or wires and the metal body.

h) All the wire ends connected to terminal board terminal shall be marked with a circuit code or a symbol that agrees with that in the drawing, in a legible and permanently identifiable manner.

i) Where the control console consists of a number of separable sections, a terminal board or boards, or a pair or pairs of separable connectors for the wiring between two adjacent sections shall be provided in either of the two sections.

j) When connecting a wire or a wire terminal to a terminal board terminal, the connection shall effectively be prevented from loosening due to vibration, such as by using a spring washer.

k) When terminating a shielded wire, the shielding braid shall be separated from the internal conductor at a point sufficiently far away from the exposed conductor end and shall be dressed so that it will not come in contact with the exposed conductor, or other terminals or conductors.

l) Dead metal parts of the electrical apparatus fitted at or inside the control console shall be effectively grounded.

m) Wiring to an intrinsically safe explosion-proof apparatus, if any in the control console, shall not be coexistent with general circuit wiring in the same wiring duct nor be banded together with general circuit wiring. Further, such wiring shall be colour-coded with a light-blue colour for ready identification that it is intrinsically safe circuit wiring.

n) When power line wires and signal wires are laid in parallel with each other, effective measures against electromagnetic induction and electromagnetic interference shall be taken.

4. Piping

4.1 Piping materials The pipe materials used for piping shall be as given in Table 2. Table 2 Pipe materials for piping

Max. working pressure (gauge pressure) MPa

Material Outside dia. Thickness Applicable standards

2.0 or less 6 1.0 3.0 or less 8 1.2, 1.4 4.0 or less

Copper and copper alloy

10 1.4

JIS H 3300

14.7 or less Steel pipe 10.5 2.2 JIS G 3454-STPG JIS G 3456-STPT

Remarks: 1. Control air header pipe operated at a maximum pressure of 1.0 MPa or less or a similar pipe may be of a material and dimensions that are suitable for the maximum operating temperature and flow of fluid in the pipe.

2. Carbon steel pipe is to be used for fuel oil piping in which fluid temperature exceeds 65C within the control console and the maximum working pressure exceeds 1.0 MPa.

F 0414: 2002

4

4.2 Couplings Couplings shall be either flareless pipe couplings or welded pipe couplings and be suitable for the pipe to be connected.

4.3 Stop valves Stop valves shall conform to the following standards or shall be equivalent thereto in performance and be suitable for the pipe to be connected:

JIS F 7329, JIS F 7341, JIS F 7343, JIS F 7379, JIS F 7387, and JIS F 8388. 4.4 Piping procedures Piping shall be carried out in accordance with the following procedures:

a) Piping shall be grouped to a practicable extent and arranged in an ordinary manner, and shall be firmly secured in position at suitable intervals by means of metal strips, etc., to prevent any harmful vibration. A sufficient allowance for thermal expansion and contraction shall be provided to prevent any pipe damage together with a further supplementary means of escape, such as insertion or buffer materials.

b) Piping shall be suitably sloped to prevent the residual fluid or condensate, and attention shall be paid to the branching out direction.

c) The internal radius of a pipe bend shall be two times or more the pipe outside diameter for 90 bending and 4 times or more for 180 bending. Pipe bending shall be made at a normal temperature using an appropriate tool or tools.

d) Machined or tooled pipes shall be cleaned with air of a sufficient velocity before assembly. e) Pressure piping to which a pressure gauge or device connects shall be provided with a stop valve

capable of withstanding the maximum pressure of that system. The stop valves shall be fitted directly to the device, or when such causes inconvenience for

valve operation, they shall be arranged in a group at a readily operable place. f) A joint portion of piping connecting to an instrument, device, or external piping shall be provided

with a fitting, except that the use of a fitting at the mid-point of any piping within the control console shall be avoided unless necessary.

g) Fittings for external piping connections shall preferably be grouped at a position that is suitable for connection work, and each fitting shall be marked with a code of symbol that agrees with that in the drawing, in a legible and permanently identifiable manner.

h) Pipe joints other than those in air piping shall be screened from electrical equipment or wiring by means of partitions, etc., so that the leakage of fluid (steam, water, oil, refrigerant) will not have any undue influence on the operation of electrical equipment. Further, there shall be a suitable draining system capable of discharging any leaked fluid or condensate to the bottom of the control console and then to the outside.

TOP PAGEJIS F with"*"mark is harmonized standards to corresponding IEC and ISO standard underwritten.JIS[ENGINES & VALVES]*F0053:00-Shipbuilding - Indication of details on the general arrangement plans of ships(IDT ISO 1964:87)F0090:99-Ship's safty signs*F0401:99-Shipbuilding - Terminology and definition of output of internal combustion propulsion engines(MOD ISO 3046-1:95)F0404:85-Calculation methods for main diesel engine output at sea trialF0406:97-Shipbuilding - Guidelines for instruction of diesel engines*F0407:98-Shipbuilding - Engine-room ventilation in diesel-engined ships - Design requirements and basis of calculations (IDT ISO/DIS 8861:96)*F0408:99-Standard of air-conditioning and ventilation of machinery control-rooms on board ships - Design conditions and basis of calculations(IDT ISO 8862:87)F0411:98-Outline dimensions of marine engine control consoles*F0412:98-Alarming and indicating system of equipment used for engine department in ships(MOD ISO 2412:82)F0414:02-Shipbuilding - Internal wirings and pipings of engine control consoleF0502:78-Sea water temperature for designing marine heat exchangersF0503:05-Shipbuilding - Coiled springs for marine machineryF0504:89-Application and setting pressure of relief valves for ships' machineryF0506:96-Shipbuilding - Application of copper pipesF0507:92-Small ships - Steel pipes - ApplicationF0602:95-Shipbuilding - Non-asbestos gaskets for cargo piping system - Application standardF0801:89-Test code of propelling machinery at sea trailsF0802:89-Shop test code for marine AC electric overhead travelling cranes in engine roomF0803:79-Methods of onboard test on automatic control of fuel oil system for smaller shipsF0804:79-Methods of onboard test on automatic control of lubricating oil system for smaller shipsF0805:79-Methods of onboard test on automatic control of cooling water system for smaller shipsF0806:79-Methods of onbord test on automatic control of compressed air, bilge, fresh water and sanitary systems for smaller shipsF0901:97-Shipbuilding - Machine tools facilityF0902:00-Shipbuilding - Spare part boxesF0904:02-Shipbuilding - Measurement of noise level on board vessels (machinery part)*F0906:99-Allowable value of vibration for ships machinery(MOD ISO 10816-1:95)F4201:96-Shipbuilding - Shop test code for steam turbines for propelling use F4301:02-Shipbuilding - Water cooled four cycle diesel engines for propelling use*F4304:99-Shipbuilding - Internal combustion engines for propelling use - Shop test code(MOD ISO 3046-1:95)*F4306:98-Shipbuilding - Water cooled four cycle generator diesel engines (MOD ISO 8528:93)*F4801:99-Fixing parts of ships' small propellers, Taper 1:10(MOD ISO 4566:92)*F4802:99-Shipbuilding - Ship screw propellers - Manufacturing tolerances - Part 1: Propellers of diameter greater than 2.50 m(IDT ISO 484-1:81)*F4803:99-Shipbuilding - Ship screw propellers- Manufacturing tolerances - Part 2: Propellers of diameter between 0.80 and 2.50 m inclusive(IDT ISO 484-2:81)*F4804:99-Fixing parts of ships' small propellers, Taper 1:16(IDT ISO 8845:94)F5609:96-Shipbuilding - Forged steel 20K reflex type water gauges with cocks for boilersF5610:96-Shipbuilding - Forged steel 20K reflex type water gauges with valves for boilersF5611:96-Shipbuilding - Forged steel 63K transparent type water gauges with valves for boilersF6601:96-Shipbuilding - Shop test code for centrifugal oil purifiiersF6602:79-Method of onboard test for oil purifier of slidge automatic discharge type for smaller shipsF6708:96-Shipbuilding - Cargo winches(NEQ ISO 3078:74)F6709:95-Mooring winches(NEQ ISO 3730:88)*F6714:95-Windlasses(IDT ISO 4568:86)F6720:95-Shop test method for ships' hydraulic steering gearsF6721:95-Shop test method for oil pressure pumps at hydraulic steering gears for shipsF7002:92-Ships - Tachometer for engineF7003:97-Shipbuilding - Applicationof pressure gauges on boardF7004:03-Shipbuilding - Thermometers in machinery space - Arrangement and installationF7005:84-Identification of piping system on board ships(NEQ ISO/R 508)F7006:04-Shipbuilding - Piping systems - Graphic symbolsF7008:01-Standard specification of thermal insulation for piping*F7011:98-Shipbuilding - Application of incinerator for marine use(NEQ ISO 13617:95)F7020:96-Shipbuilding - Turnbuckles with eye boltsF7101:02-Shipbuilding - Pipes of machinery - Standard velocity of flowF7102:97-Shipbuilding - Piping system in machinery space - Application for gaskets and packingsF7103:99-Shipbuilding - Marine engines' strainers for lubricating and fuel oilF7121:03-Shipbuilding - Can water filtersF7131:01-Shipbuilding - Distance pieces for ship's hullF7200:96-Shipbuilding - General rules for inspection of strainers(NEQ ISO 5208:93)F7201:96-Shipbuilding - Application of strainersF7202:05-Shipbuilding - Duplex oil strainers*F7203:98-Shipbuilding - Bilge mud boxes for machinery spaces and tunnels - General design characteristics(MOD ISO 5621:84)*F7206:98-Shipbuilding - Strum boxes(MOD ISO 6454:84)F7207:93-Shipbuilding - Oil strainer - Application for wire gauzeF7208:05-Shipbuilding - Duplex oil strainers (H type)F7209:01-Shipbuilding - Simplex oil strainersF7210:96-Shipbuilding - Thermometer pocketsF7211:04-Shipbuilding - Tube glass type level gauges with 5K valveF7212:04-Shipbuilding - Tube glass type level gauges with self closing valvesF7213:96-Shipbuilding - 16K water gauges with valveF7215:96-Shipbuilding - Flat glass oil level gaugesF7216:96-Shipbuilding - Self closing valves for oil level gaugesF7218:96-Shipbuilding - Cylindrical sight glassesF7219:78-Marine steel plate hoppersF7220:96-Shipbuilding - Cast iron Y type strainersF7225:96-Shipbuilding - Steel plate simplex oil strainersF7230:03-Shipbuilding - Steel plate starting air reservoirsF7231:03-Shipbuilding - Steel tube staring air reservoirsF7234:95-Shipbuilding - Flat sight glassesF7235:03-Shipbuilding - Fixed thermometers in machinery spaceF7300:96-Shipbuilding - Application for valves and cocksF7301:97-Shipbuilding - Bronze 5K globe valvesF7302:97-Shipbuilding - Bronze 5K angle valvesF7303:96-Shipbuilding - Bronze 16K globe valvesF7304:96-Shipbuilding - Bronze 16K angle valvesF7305:96-Shipbuilding - Cast iron 5K globe valvesF7306:96-Shipbuilding - Cast iron 5K angle valvesF7307:96-Shipbuilding - Cast iron 10K globe valvesF7308:96-Shipbuilding - Cast iron 10K angle valvesF7309:96-Shipbuilding - Cast iron 16K globe valvesF7310:96-Shipbuilding - Cast iron 16K angle valvesF7311:96-Shipbuilding - Cast steel 5K globe valvesF7312:96-Shipbuilding - Cast steel 5K angle valvesF7313:96-Shipbuilding - Cast steel 20K globe valvesF7314:96-Shipbuilding - Cast steel 20K angle valvesF7315:96-Shipbuilding - Cast steel 30K globe valvesF7316:96-Shipbuilding - Cast steel 30K angle valvesF7317:96-Shipbuilding - Cast steel 40K globe valvesF7318:96-Shipbuilding - Cast steel 40K angle valvesF7319:96-Shipbuilding - Cast steel 10K globe valvesF7320:96-Shipbuilding - Cast steel 10K angle valvesF7329:96-Shipbuilding - Forged steel 40K globe valvesF7330:96-Shipbuilding - Forged steel 40K angle valvesF7333:96-Shipbuilding - Cast iron hose valvesF7334:96-Shipbuilding - Bronze hose valvesF7335:96-Shipbuilding - Hose connections and fittingsF7336:96-Shipbuilding - Forged steel globe air valvesF7337:96-Shipbuilding - Forged steel angle air valvesF7340:96-Shipbuilding - Cast steel globe air valvesF7341:96-Shipbuilding - Forged steel 100K pressure gauge valvesF7343:96-Shipbuilding - Bronze 20K pressure gauge cocksF7346:96-Shipbuilding - Bronze 5K globe valves (union bonnet type)F7347:96-Shipbuilding - Bronze 5K angle valves (union bonnet type)F7348:96-Shipbuilding - Bronze 16K globe valves (union bonnet type)F7349:96-Shipbuilding - Bronze 16K angle valves (union bonnet type)F7350:96-Shipbuilding - Hull cast steel angle valvesF7351:96-Shipbuilding - Bronze 5K screw-down check globe valvesF7352:96-Shipbuilding - Bronze 5K screw-down check angle valvesF7353:96-Shipbuilding - Cast iron 5K screw-down check globe valvesF7354:96-Shipbuilding - Cast iron 5K screw-down check angle valvesF7356:96-Shipbuilding - Bronze 5K lift check valvesF7358:96-Shipbuilding - Cast iron 5K lift chek globe valvesF7359:96-Shipbuilding - Cast iron 5K lift check angle valvesF7360:96-Shipbuilding - Hull cast steel gate valvesF7363:96-Shipbuilding - Cast iron 5K gate valvesF7364:96-Shipbuilding - Cast iron 10K gate valvesF7365:96-Shipbuilding - Hull cast steel globe valvesF7366:96-Shipbuilding - Cast steel 10K gate valvesF7367:96-Shipbuilding - Bronze 5K rising stem type gate valvesF7368:96-Shipbuilding - Bronze 10K rising stem type gate valvesF7369:96-Shipbuilding - Cast iron 16K gate valvesF7371:96-Shipbuilding - Bronze 5K swing check valvesF7372:96-Shipbuilding - Cast iron 5K swing check valvesF7373:96-Shipbuilding - Cast iron 10K swing check valvesF7375:96-Shipbuilding - Cast iron 10K screw-down check globe valvesF7376:96-Shipbuilding - Cast iron 10K screw-down check angle valvesF7377:96-Shipbuilding - Cast iron 16K screw-down check globe valvesF7378:96-Shipbuilding - Cast iron 16K screw-down check angle valvesF7379:96-Shipbuilding - Brass 30K stop valves with bite joint(s)F7381:96-Shipbuilding - Bronze 5K flanged cocksF7387:96-Shipbuilding - Bronze 16K cocksF7388:96-Shipbuilding - Bronze 20K globe valvesF7389:96-Shipbuilding - Bronze 20K angle valvesF7390:96-Shipbuilding - Cocks with lockF7398:96-Shipbuilding - Fuel oil tank self-closing drain valvesF7399:02-Shipbuilding - Oil tank emergency shut-off valvesF7400:96-Shipbuilding - Valves and cocks - General inspection requirementF7403:96-Shipbuilding - Hull bronze globe valvesF7404:96-Shipbuilding - Hull bronze angle valvesF7409:96-Shipbuilding - Bronze 16K screw-down check globe valvesF7410:96-Shipbuilding - Bronze 16K screw-down check angle valvesF7411:96-Shipbuilding - Bronze 5K screw-down check globe valves (Union bonnet type)F7412:96-Shipbuilding - Bronze 5K screw-down check angle valves (Union bonnet type)F7413:96-Shipbuilding - Bronze 16K screw-down check globe valves (Union bonnet type)F7414:96-Shipbuilding - Bronze 16K screw-down check angle valves (Union bonnet type)F7415:96-Shipbuilding - Bronze 5K lift check globe valves (Union bonnet type)F7416:96-Shipbuilding - Bronze 5K lift check angle valves (Union bonnet type)F7417:96-Shipbuilding - Bronze 16K lift check globe valves (Union bonnet type)F7418:96-Shipbuilding - Bronze 16K lift check angle valves (Union bonnet type)F7421:96-Shipbuilding - Forged steel 20K globe valvesF7422:96-Shipbuilding - Forged steel 20K angle valvesF7425:96-Shipbuilding - Cast iron valvesF7426:96-Shipbuilding - Cast steel valvesF7427:05-Shipbuilding - Bronze valvesF7452:78-Marine universal jointsF7453:78-Marine transmission shaft jointsF7454:78-Marine transmission shaft loose jointsF7455:78-Marine transmission shaft bearingsF7456:99-Shipbuilding - Remote shut-off devices for fuel oil tank and lubricating oil tank emergency shut-off valvesF7457:99-Shipbuilding - Pneumatically operated remote shut-off devices for fuel oil tank and lubricating oil tank emergency shut-off valvesF7471:96-Shipbuilding - Cast steel 10K screw-down check globe valvesF7472:96-Shipbuilding - Cast steel 10K screw-down check angle valvesF7473:96-Shipbuilding - Cast steel 20K screw-down check globe valvesF7474:96-Shipbuilding - Cast steel 20K screw-down check angle valvesF7475:96-Shipbuilding - Cast steel angle air valvesF7480:96-Shipbuilding - Rubber seat butterfly valvesF7490:98-Shipbuilding - Spheroidal graphite iron (ductile iron) 5K globe valvesF7491:99-Shipbuilding - Spheroidal graphite iron (ductile iron) 5K angle valvesF7492:99-Shipbuilding - Spheroidal graphite iron (ductile iron) 5K screw-down check angle valvesF7493:99-Shipbuilding - Spheroidal graphite iron (ductile iron) 5K screw-down check globe valvesF7494:00-Shipbuilding - Spheroidal graphite iron (ductile iron) 10K globe valvesF7495:00-Shipbuilding - Spheroidal graphite iron (ductile iron) 10K screw-down check globe valvesF7496:00-Shipbuilding - Spheroidal graphite iron (ductile iron) 10K angle valvesF7497:00-Shipbuilding - Spheroidal graphite iron (ductile iron) 10K screw-down check angle valvesF7498:01-Shipbuilding - Spheroidal graphite iron (ductile iron) 16K globe valvesF7499:01-Shipbuilding - Spheroidal graphite iron (ductile iron) 16K screw-down check globe valvesF7500:01-Shipbuilding - Spheroidal graphite iron (ductile iron) 16K angle valvesF7502:99-Shipbuilding - Steel ladder and steel handrailsF7504:01-Shipbuilding - Spheroidal graphite iron (ductile iron) 16K screw-down check angle valvesF7601:90-Spare parts for ships' machineryF7602:89-Tools and outfits in machinery spaceF7603:92-Small ships - Tools and instruments of engine departmentF7804:00-Shipbuilding - 5K copper alloy pipe flanges for marine useF7805:76-Basic dimensions of steel flanges for marine exhaust gas pipeF7806:96-Shipbuilding - Ships' 280K and 350K socket welding pipe flangesF7810:95-Shipbuilding welding - Sleeve type joints for steel pipe

modoru: