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管線管 API SPEC 5L
尺寸公差標準外徑公差壁厚公差A25.A.BX42-X70D<60.3+0.41/-0.40mmD<73+20/-12.5%D≥73+15/-12.5%API SPEC 5LD≥60.3+0.75/-0.40mmD≥73+15/-12.5%D>73+15/-12.5%機械性能
標準綱級屈服強度(MPa)抗拉強度(MPa)延伸率API SPEC 5LPSL1A25172310A207331B241414X42290414X46317434X52359455X56386490X60414517X65448531X70483565PSL2MinMaxMinMaxB241448414758X42290496414758X46317524434758X52359531455758X56386544490758X60414565517758X65448600531758X70483621565758X80552690621827化學成份標準鋼級CMnP SMaxMaxMinMaxMaxAPI SPEC 5LPSL1 A25II0.210.60 0.0300.030A25III0.210.600.450.800.030A0.220.900.0300.030B0.281.200.0300.030X420.281.300.0300.030X46.X52.X560.281.400.0300.030X60.X65.X700.281.400.0300.030PSL2B0.241.200.0250.015X420.241.300.0250.015X46.X52.X560.241.400.0250.015X60.X65.X70.X800.241.400.0250.015,