Design Standard : IS 9890-1981 Pressure Testing : BS 6755 Part I/API 598/IS 6157-1981 Screwed Dimensions : ANSI B 1.20.1/BS 21/IS 554 Socket Weld Dimensions: ANSI B 16.11/BS 5351/ IS 4712 Butt Weld Dimensions : ANSI B 16.25/BS 5351/ IS 11790 END CONNECTION:SCREWED END/SOCKET WELD/BUTT WELD CLASS:150 MOC:WCB(CS)/CF8(SS-304)/CF8M(SS-316)