Project Description

  • JIS G3460 Steel Pipes for low temperature service

Commitment to You

We are committed to integrate steel resources in china and serve the global steel market. We have 15+ years of experience in steel researching, production, managing and sales.

Our ability to purchase materials directly from leading mills will give you the competitive edge. Any Questions Just Call +86-731-89903933

JIS G3460 Steel pipes for low temperature service

JIS G3460 Steel pipes used for piping at extremely low temperatures of freezing point or under

JIS G3460 Steel pipes Manufacturing method

The manufacturing method shall be as follows.

The pipes shall be manufactured from fine-grained killed steels. Pipes of STPL380 shall be seamless or electric resistance welded, and those of STPL450 and STPL690 shall be seamless.

JIS G3460 Steel pipes dimensional and tolerances

Outside diameter: 10.5-660.4mm

wall thickness: sch 10-160

dimensional and tolerances: +/-1% OD ; +/- 1.6mm WT

JIS G3460 Steel pipes Chemical composition

Symbol of grade C Si Mn P S Ni
STPL380 0.25 max. 0.35 max. 1.35 max. 0.035 max. 0.035 max. /
STPL450 0.18 max. 0.10 to 0.35 0.30 to 0.60 0.030 max. 0.030 max. 3.20 to 3.80
STPL690 0.13 max. 0.10 to 0.35 0.90 max. 0.030 max. 0.030 max. 8.50 to 9.50

JIS G3460 Steel pipes Mechanical properties

Symbol of grade Tensile strength

N/mm2

 Yield point or

proof stress N/mm2

 Elongation %
Tensile test piece and tensile test direction
Test piece No.

11 or No. 12

 Test piece

No. 5

 Test piece No. 4
Parallel to pipe axis Perpendicular to pipe axis Parallel to pipe axis Perpendicular to pipe axis
STPL380 380 min. 205 min. 35 min. 25 min. 30 min. 22 min.
STPL450 450 min. 245 min. 30 min. 20 min. 24 min. 16 min.
STPL690 690 min. 520 min. 21 min. 15 min. 16 min. 10 min.

JIS G3460 Steel pipes Heat treatment

STPL380/STPL450 Normalizing, normalizing followed by tem pering, or quenching followed by tempering

STPL690 Normalizing twice followed by tempering, or quenching followed by tempering

JIS G3460 Steel pipes Appearance

Appearance shall be as follows.

  1. a) The pipes shall be straight, and the both ends shall be perpendicular to the pipe axis for practical purposes.
  2. b) Both the internal and external surfaces of pipes shall be smoothly finished and free from defects detrimental to use.
  3. c) Pipes may be repaired by grinding or machining, provided that the wall thickness of the product after repairing satisfies the specified tolerances. Repair by weldingis not permitted.
  4. d) The surface of the repaired part shall be smooth along the contour of the pipe.
  5. e) The external surface of the part where a weld bead was removed shall be smooth along the contour of the pipe.

JIS G3460 Steel pipes Tests and Inspection

Chemical analysis

Mechanical tests

Tensile test

Flattening test

Bend test

Charpy impact test

Hydrostatic test

Non-destructive test

Experienced 15+ Years

Our ability to purchase materials directly from leading mills at the best possible price will give you the competitive edge. This coupled with a skilled workforce dedicated to embracing the demands of the markets.

We Can Supply Follows Products with High Quality:

  1. Cold Rolled Steel Tube
  2. Cold Drawn Steel Tube
  3. Hollow Bar
  4. Honed Tube
  5. Plated Tube
  6. Plated Bar
  7. Boiler Tube

All Products According Quality Standard Strictly:

  1. ASTM: ASTM A519, ASTM A513.
  2. JIS:JIS G3441, JIS G3445, JIS G3466, JIS G3459.
  3. DIN: DIN1626, DIN1629, DIN2391, DIN2393, DIN2448, DIN2458.
  4. EN: EN10305.
  5. BS: BS6323.

Wide Range of Pipes to Fit Your Industry:

  1. OD from 5mm to 820mm.
  2. Wall Thickness from 0.1 to 100mm.
  3. Length up to 50mtr per pc.

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