... 48Types: Welding Neck Flanges, Slip on Flanges, Threaded Flanges, Socket Welding Flanges, Blind Flanges, Orifice Flanges, Lap Joint Flanges, ... Flanges(113),Lapped Pipeend FlangesE(133), Plate Flanges(101),Loose Plate Flanges(102), Loose Plate With Weld-neck Flanges (104),Blank ... , lap joint flange, thread flange, slip on flange,socket welding flange,blind flange material: carbon steel, stainless steel ...