... :ASME,ANSI,BS,etc. 4)material:cs,ss,alloy BG BW pipe fitting 180 Degree Bend sizeSeamless:from 1/2" to ... JISB2313, BS, GB, ISOmaterialCarbon steel(ASTM A234WPB,,A234WPC,A420WPL6. 20#,Q235,10#,20#,A3, Q235A, 20G,16Mn, ect)Stainless steel(ASTM A403 ...