不锈钢无缝钢管国内部分标准对比（参考）

　不锈钢无缝钢管国内部分标准对比（参考）项目标准GB13296-91GB/T14976-2002商标0Cr18Ni91Cr18Ni9Ti0Cr18Ni91Cr18Ni9Ti00Cr19Ni100Cr18Ni9Ti00Cr19Ni100Cr18Ni9Ti0Cr25Ni200Cr18Ni12Mo2Ti0Cr25Ni200Cr18Ni12Mo2Ti0Cr17Ni12Mo20Cr19Ni13Mo30Cr17Ni12Mo20Cr19Ni13Mo300Cr17Ni14Mo200Cr19Ni13Mo300Cr17Ni14Mo200Cr19Ni13Mo30Cr18Ni11Nb1Cr19Ni11Ti*0Cr18Ni11Nb00Cr19Ni13Mo3屈从强度≥175；≥205≥175；≥205抗拉强度≥480；≥520；≥530≥480；≥520；≥530延长度≥35；≥40≥35压扁实验t≤10mmH=1.09t/(0.09+t/D)（选做）t≤10mmH=1.09t/(0.09+t/D)扩面实验T≤10mmGB/T242α=60°扩18%D（选做）t≤10mmGB/T242扩10%Dα=30°、45°或60°晶粒度“*GB/T63944-7级水压实验GB241P=2Rt/D式中R=σb/4GB241P=2Rt/D式中R=40%σbPmax=20可用超声或涡流探伤代替GB/T7735A级可不做水压GB416312%t或GB/T7735A级晶腐实验GB4334.5GB4334.5无损探伤GB/T5777C10级经两边协定，可选做超声热处理请求请求外径误差外径许可误差外径通俗级较高等8-30&plun;0.206-10&plun;0.20&plun;0.15＞30-50&plun;0.30＞10-30&plun;0.30&plun;0.20＞30-50&plun;0.40&plun;0.30＞50&plun;0.80%D＞50&plun;0.90%D&plun;0.80%D壁厚误差壁厚许可误差壁厚通俗级较高等1.0~3.0+12%/-10%t0.5-1&plun;0.15&plun;0.123.0&plun;10%＞1-3&plun;14%t+12%t/-10%t＞3+12.5%t/-10%t&plun;10%曲折度t≤15mm1.5t≤15mm1.5T＞15mm2.0T＞15mm2.0其它请求可选做硬度实验HRB＜90