... B16.48Types: Welding Neck Flanges, Slip on Flanges, Threaded Flanges, Socket Welding Flanges, Blind Flanges, Orifice Flanges, Lap Joint Flanges, ... Hubbed Threaded Flanges(113),Lapped Pipeend FlangesE(133), Plate Flanges(101),Loose Plate Flanges(102), Loose Plate With Weld-neck Flanges ... 48" Welding Neck Flanges, Slip on Flanges, Threaded Flanges, Socket Welding Flanges, Blind Flanges, Orifice Flanges