... mm) ASTM B338ASME SB338 ASTM B337ASTM B8613~50.2,0.3,0.5,0.6>5~100.3 ... 0.8,1.0,1.25,1.5,2.0,2.5,3.0>30~401.0,1. ... 25,1.5, 2.0,2.5,3.0,3.5>40~501.25 ... ,1.5, 2.0,2.5,3.0,3.5>50~601.5, 2.0,2.5,3.0, ... 3.5,4.0>60~801.5, 2.0,2.5,3.0,3.5,4.0,4 ... 0,1.25,1.5, 2.0381.5, 2.0,2.5502.0,2.5632.0,2.56~100.5,0.6 ... ~1.5Mwelded31,32,330.8~2.0Mwelded381.5~2.5Mwelded502.0~2.5Mwelded632.0~2.5MweldedGR1 GR2GR3 GR7 GR12 6~ ...