JIS G3457 Arc Welded Carbon Steel Pipes

JIS G3457 Arc Welded Carbon Steel Pipes

JIS G3457 Arc Welded Carbon Steel Pipes

1. Scope
This Japanese Industrial Standard specifies the arc welded carbon steel pipes used for piping for steam, water, gas, air, etc. of comparatively low working pressure.
Outside diameter range 355.6mm to 2032mm.

2. Steel Grade: STPY400(Traditional symbol STPY41)

3. Chemical Composition
C 0.25 max.
P 0.040 max.
S 0.040 max.

3. Mechanical Properties
Yeild Strength 225Mpa min.
Tensile Strength 400Mpa min.
Elongation 18% min

4. Outside diameter and wall thickness tolerance
Outside diameter: ±%0.5
Wall thickness (OD under 450A): ﹢15%, -12.5%
Wall thickness (OD over 450A): ﹢15%, -10%

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