1. Threaded Stub End Flange 2. Size: 1/2"-24" 3. ... 47TypeWeld Neck, Slip-On, Blind, Socket Weld, Lap Joint, Threaded, Orifice Flange, Swivel Flange, Spectacle Blind,Etc.StandardANSI, ASME ... ANSI B16.36 : (ORIFICE FLANGES) WELDING NECK FLANGE, SLIPON FLANGE, THREADED FLANGE.Pressure Class :300, 400 , 600 , 900, 1500 , ... our products and special design are warmly welcome. Threaded Stub End Flange