JIS G3455 STS 370 Pipe is a low carbon steel pipe with a maximum carbon content limited to 0.25%. This steel pipe contains 0.30-1.10% manganese, and these pipes are manufactured as per JIS specifications, hence they are often referred to as CS pipe or MS pipe in the commercial industry.
JIS G3455 STS 370 Carbon Steel Seamless Pipe is specifically used in the manufacture of automotive, hydraulic systems, and precision machinery parts. Its high strength and durability allow it to withstand high pressure and high temperature environments without deformation or cracking. It is easy to process and weld, giving it high flexibility in the manufacturing process.
Specification forJIS G3455 steel pipes
| JIS Standard | JIS G3455 |
| JIS G3455 Grade | STS480, STPG 410, STPG 370 |
| JIS G3455 Wall Thickness | 1.0mm – 20 mm THK |
| JIS G3455 Outer Dimensions | 6mm - 150mm |
Chemical Composition of JIS G3455 STS 370 pipe
| Grade | Chemical Composition % | ||||
| C | Si | Mn | P | S | |
| STS 370 | 0.25 max. | 0.10~0.35 | 0.30~1.10 | 0.035 max. | 0.035 max. |
Mechanical Properties of JIS G3455 STS 370 seamless pipe
| 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 | |||
| STS370 | 38 {373}min | 22{216} min | 30 min | 25 min | 23 min | 28 min |
STS 370 Carbon Thick Wall Steel Pipe

Tolerance on Wall Thickness in JIS G3445 pipe
| Standard | Tolerance on wall thickness (mm) | |
JIS G3445 |
<=4 | -0.5,+0.6 |
| >4 | -12.5%, +15% | |
JIS G3445 |
<=3 | ±0 .3 |
| >3 | ±10% | |
JIS G3445 |
<=2 | ±0.15 |
| >2 | ±8% | |
Why Choose GNEE
We are committed to the research and development, manufacturing and service of various special seamless steel pipes. With excellent products, high-quality services and reasonable prices, we are widely exported to more than 50 countries and regions including Europe, the United States, the Middle East, Southeast Asia, Africa, etc.
We can also supply Carbon Steel Pipe, APl Line Pipe, Galvanized Pipe in any form.sales@gneetube.com
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