... 1/2"- 72" 2.Welding Neck,Slip On,Lap Joint,Blind.Threaded,Swivel,Orifice ... 150-2500LBS OEM Flange Size1/2"-72"TypeWeld Neck, Slip-On, Blind, Socket Weld, Lap Joint, Threaded, ... :* ASME/ANSI B16.5 : WELDING NECK FLANGE, SLIP-ON FLANGE, BLIND FLANGE,HIGH HUB BLIND FLANGE, SOCKET ... WELD FLANGE.LAPJOINT FLANGE, THREADED FLANGE. RING TYPE JOINT FLANGE.Pressure Class : 150, 300, 400 , ...