STPG410 Steel Welded Pipe
STPG 410 carbon steel pipes have a specific chemical composition. They typically contain about 0.30-0.35% carbon, 0.30-0.90% manganese, 0.040% phosphorus, 0.040% sulfur, and small amounts of silicon. STPG 410 pipes are required to meet specific mechanical properties, including minimum tensile strength, yield strength, and elongation. These properties ensure the pipes' ability to withstand high-pressure conditions.STPG 410 pipes can be welded using standard welding processes. However, it's crucial to follow appropriate welding procedures and post-weld heat treatment to maintain the integrity of the material.
Chemical Composition of JIS G3454 STPG 410
| Letter symbol of grade | Chemical Composition % | ||||
| C | Si | Mn | P | S | |
| STPG 410 | 0.30 max. | 0.35 max | 0.30 ~0.90 | 0.040 max. | 0.040 max. |
Mechanical Properties of JIS G3454 STPG 410
| Letter symbol of grade | Mechanical Properties | |||||
| Tensile strength | Yield strength | Elongation % | ||||
| kgf/m㎡ {N/ m㎡} | kgf/m㎡ {N/ m㎡} | No.11 and No.12 test pieces | No. 5 test pieces | No. 4 test piece | ||
| Longitudinal | Transverse | Longitudinal | Transverse | |||
| STPG 410 | 42{412}min | 25{245} min | 25 min | 20 min | 19 min | 24 min |
Dimensions Tolerance of JIS G3454 Carbon Steel Pipes
| Division | Tolerances on outside diameter | Tolerances on wall thickness |
| Hot-finished seamless steel pipe | 40 A or under 【0.5mm | Under 4mm +0.6mm -0.5mm 4mm or over +15% -12.5% |
| 50A or over up to and incl. 125 A 【1% | ||
| 150A 【1.6mm | ||
| 200A 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%. |
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| Cold-finished seamless steel pipe and electric resistance welded steel pipe | 25 A or under 【0.3mm | Under 3mm 【0.3mm 3mm or over 【10% |
| 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%. |
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