JIS G3456 Seamless tubes

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JIS G3456 Carbon steel pipes, Seamless pipes for high temperature service at a temperature over 350 Degrees celsius.

Standard:

JIS G 3456:2010
JIS, Japanese Industrial Standards specifies the standards used for industrial activities in Japan.

Size range of JIS G3456(mm):

  • Outer Dimensions: 19.05mm- 114.3mm
  • Wall Thickness:2.0mm -14 mm
  • Length: max 16000mm

Application:

  • Carbon steel pipes for pressure service
  • High pressure service and high temperature service at  a temperature over 350 Degrees celsius

Packing:

  • Be packed in Bare/bundles/crates/crate protection at the both sides of tubes or as per customers’ requirements .
  • Surface: Varnish coating
  • Ends: Beveled or Plain ends with Plastic caps
  • Painting: as requested.

Inspection Certification:

1) Certification: ISO, API, ASTM, DIN etc.
2) Mill Test Certificate: EN10204/3.1B
3) Third party inspection: SGS, BV, Lloyds etc.

The main products of steel / steel grade:

  • JIS G3456 STPT370
  • JIS G3456 STPT410
  • JIS G3456 STPT480

Chemical Compositions(%) of JIS G3456

Standard/ GradeCSiMnPS
JIS G3456 STPT370≤0.250.10-0.350.30-0.90≤0.035≤0.035
JIS G3456 STPT410≤0.300.10-0.350.30-1.00≤0.035≤0.035
JIS G3456 STPT480≤0.330.10-0.350.30-1.00≤0.035≤0.035

Mechanical Properties of JIS G3456

Standard/ GradeYield Strength (Mpa)Tensile Strength (Mpa)Elongation (%)
JIS G3456 STPT370≥216≥370≥30
JIS G3456 STPT410≥245≥410≥25
JIS G3456 STPT480≥275≥480≥25


Tolerance on Outside Diameter and Wall Thickness in JIS G3456

APPLICATIONTOLERANCE ON OUTSIDE DIAMETERTOLERANCE ON WALL THICKNESS
Hot Rolled
Seamless Pipes		< mmspan>±0.5mm< mmspan>±0.5mm
<50-160mm span="">±1%
<160-200mm span="">±1.6mm<4mm span="">±12.5%
<200mm span="">±0.8%
More that 350mm, the
Tolerance is ±0.5%
Cold Drawn
Seamless Pipes
and Electric Resistant
Welded Pipes		< mmspan>±0.3mm< mmspan>±0.2mm
<40mm span="">±0.8%<2mm span="">±10%
More than 350 mm the
Tolerance is ±0.5%

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