直缝焊接钢尺寸规格表规格 外径国标壁厚焊理论重量表4分151/2寸21.252.751.266分203/4寸26.752.751.631寸251寸33.33.252.421.2寸3211/4寸42.253.253.131.5寸4011/2寸483.53.842寸502寸603.54.882.5寸7021/2寸75.53.756.643寸803寸88.54.08.344寸1004寸1144.010.855寸1255寸1404.515.046寸1506寸1654.517.818寸2008寸219631.52 |