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Tianjin Wanlei Steel Pipe Co.,Ltd
TEL: 86-22-65815991
FAX: 86-22-25343802
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JIS G3454 Carbon Steel Pipes
JIS G3454 pipes used for pressure service at an approximate maximum temperature of 350℃. We supply high quality JIS G3454 STPG370 and STPG410 seamless steel pipes for you.
Description
Tianjin Wanlei Steel Pipe Co., Ltd. is one of the leading manufacturers and suppliers of jis g3454 carbon steel pipes in China, featured by quality products and low price. If you're going to wholesale durable jis g3454 carbon steel pipes made in China, welcome to get pricelist and free sample from our factory.
JIS G3454 carbon steel pipes
JIS G3454 pipes used for pressure service at an approximate maximum temperature of 350℃.
Chemical composition
unit: %
| Letter symbol of grade | C Max | Si Max | Mn | P Max | S Max |
| STPG370 | 0.25 | 0.35 | 0.30-0.90 | 0.040 | 0.040 |
| STPG410 | 0.30 | 0.35 | 0.30-0.90 | 0.040 | 0.040 |
Mechanical properties
| Letter symbol of grade | Tensile strength MPa | Yield points or proof stress MPa |
| STPG370 | 370 min | 215 min |
| STPG410 | 410 min | 245 min |
Tolerances on outside diameter and wall thickness
| Division | Tolerance on outside diameter | Tolerances on wall thickness | ||
Hot finished seamless steel pipe | 40A or under | ±0.5mm | under 4mm | +0.6mm, -0.5mm |
| 50A or over up to and incl. 125A | ±1% | 4mm or over | +15%, -12.5% | |
| 150A | ±1.6mm | |||
| 200A or over | ±0.8% | |||
| 350A or over | ±0.5%*π*D | |||
cold finished seamless steel pipe and ERW steel pipe | 25A or under | ±0.3mm | Under 3mm | ±0.3mm |
| 32A or over | ±0.8% | 3mm or over | ±10% | |
| 350A or over | ±0.5%*π*D | |||
Hydrostatic Test Pressure (unit: MPa)
schedule number sch | 10 | 20 | 30 | 40 | 60 | 80 |
Hydrostatic test pressure | 2.0 | 3.5 | 5.0 | 6.0 | 9.0 | 12 |
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