JIS G3454 Carbon Steel Pipes For Pressure Service

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The carbon steel pipes in JIS G3454 standard used for pressure service at temperatures up to about 350℃. it is not applicable to pipes for high pressure service. The pipes covered by this standard are those of outside diameters 10.5mm (6A or 1/8 B) to 660.4mm (650A or 26B). There are two grades, STPG370 and STPG410, in this standard. A tube are manufactured by welding or seamless, also can be dipped zinc coating.

Details

              JIS G3454 Carbon Steel Pipes For Pressure Service

Chemical composition and mechanical properties

Manufacturing Process

1. Welding process: Seamless or Electric resistance welded (ERW)

2. Finishing process: Hot finished, called "H"

            Cold finished, called "C"

            As electric resistance welded, called "G"

The scope of nominal diameter and wall thickness

Nominal diameter: 6A,8A,10A,15A,20A...650A;1/8B,1/4B,3/8B...26B as per standard JISG3454

Nominal wall thickness: Sch10, Sch20,Sch30,Sch40,Sch60,Sch80

Length:Single random, double random or fixed length.

Test for JIS G3454 carbon steel pipes for pressure service

1. Flattening resistance

2. Bend test

3. Zinc-coating test

4. Hydraulic test

5. Nondestructive

6. Ultrasonic examination

7. Eddy current examination

Marking for JIS G3454 carbon steel pipes for pressure service

1. Standard

2. Symbol of grade

3. Symbol representing manufacturing process

1) Hot finished seamless steel pipe: -S-H

2) Cold finished seamless steel pipe: -S-C

3) As electric resistance welded steel pipe:-E-G

4) Hot-finished electric resistance welded steel pipe: -E-H

5) Cold-finished electric resistance welded steel pipe:-E-C

4. Specification for example 50A x SCH40

5. Manufacturer's name or it's brand

Any information among the above not essential for identification of the product may be omitted upon agreement between the purchaser and the manufacturer.

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