we have obtained ISO 9001, ISO 14001, ISO 45001, CE, AAA-level credit rating certification, etc.
we have obtained ISO 9001, ISO 14001, ISO 45001, CE, AAA-level credit rating certification, etc.
Applications JIS G3456 high-pressure carbon steel pipes are extensively used for pressure service, high pressure service and high temperature software. They are typically used your past piping higher working pressure and an issue temperature of below 350℃. This high pressure steel pipe is also utilized in boiler, electric power, machinery, gas tank, chemical engineering, offshore and petroleum engineering, etc.
JIS G 3456 Carbon ERW Steel Pipe :
Manufacture:Electric resistance welded pipe
Size: O.D.: 15.0～660mm W.T.: 2～20mm
Grade: STPT370, STPT410
Length: 6M or specified length as required.
Ends: Plain End, Beveled End.
JIS G 3456 Carbon Seamless Steel Pipe:
Manufacture: seamless pipe (hot finished or cold finished)
Size: O.D.: 15.0～660mm W.T.: 2～50mm
Grade: STPT370, STPT410, STPT480
Length: 6M or specified length as required.
Ends: Plain End, Beveled End.
Outer Diameter and Wall Thickness
|
Type |
Allowable Deviation of Outer Diameter |
Allowable Deviation of Wall Thickness |
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|
Hot-Working Seamless Steel Pipe |
＜50 mm |
± 0.5 mm |
＜ 4 mm ≥ 4mm |
± 0.5 mm ±12.5% |
≤ 20% of thickness |
|
≥ 50mm~＜160mm |
± 1% |
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≥ 160mm~≤ 200 mm |
± 1.6 mm |
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≥ 200 mm |
± 0.8% |
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For ≥350 mm ones, we can measure according to the perimeters. Allowable deviation is ± 0.5%. |
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Cold-Working Steel Seamless Pipe and Electric-Resistance Welded(ERW) Steel Pipe |
≤ 40 mm |
± 0.03 mm |
＜ 2 mm ≥ 2 mm |
± 0.2 mm ± 10% |
- |
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CHEMICAL COMPOSITION
|
Grade |
C |
Si |
Mn |
P |
S |
|
JIS G3456 STPT370 |
≤ 0.25 |
0.10-0.35 |
0.30-0.90 |
≤ 0.035 |
≤ 0.035 |
|
JIS G3456 STPT410 |
≤ 0.30 |
0.10-0.35 |
0.30-1.00 |
≤ 0.035 |
≤ 0.035 |
|
JIS G3456 STPT480 |
≤ 0.33 |
0.10-0.35 |
0.30-1.00 |
≤ 0.035 |
≤ 0.035 |
MECHANICAL PROPERTIES
|
de |
Tensile Property (N/mm2) |
Yield Point or Yield Strength (N/mm2) |
Elongation (%) |
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|
NO. 11 Sample; NO. 12 Sample |
NO. 5 Sample |
NO. 4 Sample |
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|
Longitudinal |
Transverse |
Longitudinal |
Transverse |
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|
JIS G3456 STPT370 |
≥ 370 |
≥ 215 |
≥ 30 |
≥ 25 |
≥ 28 |
≥ 23 |
|
JIS G3456 STPT410 |
≥ 410 |
≥ 245 |
≥ 25 |
≥ 20 |
≥ 24 |
≥ 19 |
|
JIS G3456 STPT480 |
≥ 480 |
≥ 275 |
≥ 25 |
≥ 20 |
≥ 22 |
≥ 17 |
Equivalent Designation
|
KS |
ASTM |
JIS |
DIN |
BS |
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|
Standard |
GRADE |
Standard |
GRADE |
Standard |
GRADE |
Standard |
GRADE |
Standard |
GRADE |
|
D 3570 |
370 SPHT |
A 106 |
Gr A |
G-3456 |
370 STPT |
17 175 |
St 35.8 |
3602 |
360 HFS |
|
410 SPHT |
Gr B |
410 STPT |
17 175 |
St 45.8 |
3602 |
410 HFS |
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|
480 SPHT |
Gr C |
480 STPT |
– |
– |
3602 |
460 HFS |
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