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.
JIS G3454 carbon steel pipes are used for pressure conditions at an limited maximum temperature of 350℃. If you requires for higher pressure pipes shall consider JIS G 3455 standard. JIS G3454 Steel pipe can be manufactured into seamless steel pipe or electric-resistance welded steel tubes, the purchaser may designate the quality requirements on hot finished or cold finished state.
Tolerances on Outside Diameter and Wall Thickness:
|
Division |
Tolerances on outside diameter |
Tolerances on wall thickness |
|
Hot-finished seamless steel pipe |
40 A or under 0.5mm |
Under 4mm |
|
50A or over up to and incl. 125 A 1% |
+0.6mm
-0.5mm
4mm or over
+15%
-12.5% |
|
|
150A 1.6mm |
||
|
200A or over 0.8% |
||
|
Cold-finished seamless steel pipe and electric resistance welded steel pipe |
25 A or under 0.3mm |
Under 3mm
3mm or over |
|
32 A or over 0.8%
For the pipe of nominal size 350 A or over, the tolerances on outside diameter may be determined by the measurement of the length of circumference. In this case, the tolerances shall be 0.5%. |
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.
The main products of steel / steel grade:
JIS G3454(STPG370, STPG410)
Chemical Compositions(%):
|
Standard |
Grade |
C |
Si |
Mn |
P |
S |
|
JIS G3454 |
STPG370 |
≤0.25 |
≤0.35 |
0.30-0.90 |
≤0.040 |
≤0.040 |
|
STPG410 |
≤0.30 |
≤0.35 |
0.30-1.00 |
≤0.040 |
≤0.040 |
Mechanical Properties:
|
Standard |
Grade |
Yield Strength (Mpa) |
Tensile Strength (Mpa) |
Elongation (%) |
|
JIS G3454 |
STPG370 |
≥216 |
≥370 |
≥30 |
|
STPG410 |
≥245 |
≥410 |
≥25 |
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