... to ANSI/ASME,JIS,DIN,BS,UNI,AS2129,EN1092,GB,HG,SH,SHJ,SGJ international standard.ANSI standard :ANSI b16.5,16.36 ... ,HG,SH,SHJ,SGJMaterial: carbon steel,stainless steel ,alloy steel ASTM A 105, A182, Q235,A3,20#,16Mn,0Cr18Ni9,1Cr18Ni9Ti and ... :SOP,SOH,WELDING NECK,SLIP ON,BLIND Rf and So flange