Flange connection is to fix two pipes, pipe fittings or equipment respectively on a flange plate, and then add flange pads between the two flange plates and fasten them with bolts to complete the connection. . Some pipe fittings and equipment already have flanges, which are also flange connections. Flange connection is an important connection method for pipeline construction. The flange connection is easy to use and can withstand large pressures. In industrial piping, in the home, the diameter of the pipe is small and the pressure is low, and the flange connection is not visible. If in a boiler room or production site, flanged pipes and equipment are everywhere.
According to the connection method, the flange connection types can be divided into: plate type flat welding flange, neck flat welding flange, neck welding flange, socket welding flange, thread flange, flange cover, neck welding ring Loose sleeve flanges, flat welding ring loose sleeve flanges, ring groove surface flanges and flange covers, large diameter flat flanges, large diameter high neck flanges, splayed blind plates, butt welding ring loose sleeve flanges, etc.