... # grade O.D.: 18-273mm W.T.: 2-30mm StandardASTM, BS, JIS, DINSteel GradeGB 10#-45#, Q195-Q345,ASTM A53-A369 ... ,DIN ST35-ST52, BS 1387O.D.1/2"--10"W.T.SCH10--SCH160Length4m--12mEnd protectionPlastic capsOutside CoatingBlack painting, anti- ... ,Traffic.Tolerance OD :+1% / -1% WT: +12.5% / -10% Main marketAsia, India, Middle East, America, Europe Standardgradechemical composition(%)CSiMnPSCuNiMoCrDIN ...