... " 2.Type:Weld Neck,Slip On,blind,Flat,Socket weld flange 3.ANSI,API6A,MSP,DIN,BS ... Slip-On, Blind, Socket Weld, Lap Joint, Threaded, Orifice Flange, Swivel Flange, Spectacle Blind,Etc.StandardANSI, ASME ,MSS ... , 400 , 600 , 900* ASME/ANSI B16.36 : (ORIFICE FLANGES) WELDING NECK FLANGE, SLIPON FLANGE, THREADED FLANGE.Pressure Class ... , 3000Psi, 5000Psi, 10000Psi, 15000Psi, 20000Psi, 25000Psi Flat flange