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GB/T 9711.1-Line Pipe-Steel pipe for pipeline transportation system of petroleum and natural gas industries(Class A steel pipe)
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GB/T 9711.1-Line Pipe-Steel pipe for pipeline transportation system of petroleum and natural gas industries(Class A steel pipe)
| Tolerance of Outside Diameter and Wall Thickness of SSAW Steel Pipe | ||||||
| Standard | Tolerance of Pipe Body | Tolerance of Pipe End | Tolerance of Wall Thickness | |||
| Out Diameter | Tolerance | Out Diameter | Tolerance | |||
| GB/T9711.1 | OD≤48.3mm | -0.79～+0.41 | – | – | OD≤73 | -12.5%～+20% |
| 60.3 ≤457mm | ≤±0.75% | OD≤219mm | -0.4～+1.59 | 88.9≤OD≤457 | -12.5%～+15% | |
| 508 ≤941mm | ≤±1.0% | OD≥323.9 | -0.79～+2.38 | OD≥508 | -10.0%～+17.5% | |
| OD>941mm | ≤±1.0% | – | – | – | – | |
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