美国SCH对照表(直缝钢线钢)ODNOMINAL WALL THICKNESS SCHABASME102030STD4060XS80100120140160XXS151/2& 21.32.112.412.772.773.733.734.787.47203/4& 26.72.112.412.872.873.913.915.567.82251& 33.42.772.93.383.384.554.556.359.09321.1/4& 42.22.772.973.563.564.854.856.359.7401.1/2& 48.32.773.183.683.685.085.087.1410.15502& 60.32.773.183.913.915.545.548.7411.07652.1/2& 733.054.785.165.167.017.019.5314.02803& 88.93.054.785.495.497.627.6211.1315.25903.1/2& 101.63.054.785.745.748.088. |