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SA106GR.B无缝管化学成分含量是多少
SA 106B化学成分:碳:<=0.3%锰:0.29%~1.06%磷:<=0.035%硫:<=0.035%硅:>=0.1%铬:<=0.40%铜:<=0.40%钼:<=0.15%镍:<=0.40%钒:<=0.08%机械性能:抗拉强度>=415MPA屈服强度>=240MPA伸长率>=30%