1:Pipe:201,202,301,304etc 2:OD:9.5--219mm 3:Thickness(mm):0.25--3.0 4:Standard:ASTM-A554,GB 5:Application:Decoration No.Chemical Composition AnalysisGradeC ≤Si ≤Mn ≤P ≤S ≤Ni ≤Cr ≤Mo ≤N ≤2010.150.758.5-13.50.060.030.8-2.011-16 2020.151.007.5-100.050.034-617-19 3010.151.002.000.0450.036-816-18 3040.071.002.000.0450.038-1017-19 1) Round pipes - Outside diameter(mm) :8,9.5,11,12, 12.7,14.5, 15.9, 17, ...