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Seamless steel pipe 1)Thickness:2.5-75mm 2)Outer Diameter:32-630mm 3)Application:Fluid Pipe 4)Certification:ISO9001:2000
GB/T8163-2008 seamless steel pipe for fluid transport
1)Seamless steel pipe Specification
| Seamless type | Outer Diameter | Thickness | Length |
| Round Pipe | 32mm - 630mm | 2.5mm-75.0mm | any length |
| Square Pipe | 10mm*10mm-600mm*600mm | 1.5mm-75.0mm | any length |
| Rectangle Pipe | 20mm*10mm - 400mm*300mm | 1.5mm-55.0mm | any length |
| L/T/Z window section | 28mm/38mm | 0.5mm-1.5mm | any length |
2)Seamless steel pipe dimensions and tolerances
| Bias level | Standard diameter tolerance |
| D1 | ±1.5%,Least±0.75 mm |
| D2 | ±1.0%,Least±0.50 mm |
| D3 | ±0.75%,Least±0.30 mm |
| D4 | ±0.50%,Least±0.10 mm |
3)Seamless steel pipe production technology:Hot rolled
GB/T8163-2008 seamless steel pipe