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Line Pipe-Steel pipe for pipeline transportation system of petroleum and natural gas industries(Class A/B steel pipe)
keyword GB/T 9711 Category Steel pipe standards Related products Get a quoteWhat is GB/T 9711?
GB/T 9711.1-Line Pipe-Steel pipe for pipeline transportation system of petroleum and natural gas industries(Class A steel pipe)
GB/T 9711.2-Line Pipe-Steel pipe for pipeline transportation system of petroleum and natural gas industries(Class B 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% | – | – | – | – | |
| GB/T9711.2 | 60 ≤610mm | ±0.75%D～±3mm | 60 ≤610mm | ±0.5%D～±1.6mm | 4mm | ±12.5%T～±15.0%T |
| 610 ≤1430mm | ±0.5%D～±4mm | 610 ≤1430mm | ±0.5%D～±1.6mm | WT≥25mm | -3.00mm～+3.75mm | |
| OD>1430mm | – | OD>1430mm | – | – | -10.0%～+17.5% | |
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