... Welding Neck Flanges, Slip on Flanges, Threaded Flanges, Socket Welding Flanges, Blind Flanges, Orifice Flanges, Lap Joint Flanges ... Welding); TYPE13(Hubbed Threaded Flanges)Pressure ClassPN2.5PN6PN10PN16PN25PN40PN63PN100SIZE: 1/2" TO 48"6.UNI FLANGESTYPES: FLANGESPressure ClassPN0 ... Table H ScrewedSIZE: 1/2" TO 48" Welding Neck Flanges, Slip on Flanges, Threaded Flanges, Socket Welding Flanges, Blind ...