Tolerance of Outside Diameter and Wall Thickness of SSAW Steel Pipe 螺旋埋弧焊管外径和壁厚公差 | ||||||
Standard 标准 | Tolerance of Pipe Body 管体公差 | Tolerance of Pipe End 管端公差 | Tolerance of Wall Thickness 壁厚公差 | |||
Out Diameter 外径 | Tolerance 公差 | Out Diameter 外径 | Tolerance 公差 | |||
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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