... #, 45#16Mn, St52, St42 Carbon steel butt welded seamless pipe fitting Standard:JIS G3454-2007, JIS GB/T ... Grade: 20#, ... (7) Packing : paint,bundles or for the clients’ needs(8) Application field:Transportation of oil,gas or fluid,Construction,Electricity ... industy,Chemical industy,Petroleum,Traffic. Standardgradechemical composition(%)CSiMnPSCuNiMoCrDIN 17175ST37ST35.8 0.07~0.140.17~0.370.35~0.65 ...