... . FLANGE: WELDING NECK ,SLIP ON ,BLIND ,PLATE,THREADED,LAPPED ,SCREWDE,SOCKET WELDING PRESSURE: 1. ANSI B 16.5 :CLASS150.300.600 ... ) ANSI B 16.5 :WELDING NECK ,SLIP ON ,THREADED,LAP JOINT,SOCKET WELDING ,BLIND ,NO PLATE FLANGE 4) DIN :PLATE,WELDING NECK ...