Flange (flange) connection is the two pipes, pipe fittings or equipment, the first fixed on a flange, flange between the two, plus the flange pad, bolted together to complete the connection. Some pipe fittings and equipment have their own flange, flange connection is also. Flange connection is an important connection of pipeline construction. Flange connection is easy to use, can withstand greater pressure. Flange connections are widely used in industrial pipelines. In the home, the pipe diameter is small, and is low pressure, can not see the flange connection. If in a boiler room or production site, the flange is connected to the pipe and equipment.
According to the connection flange connection type can be divided into: plate flange, hubbed flange, butt welding neck flange, socket welding flange, threaded flange, flange cover and welding neck flanges with ring ring, loose flange, ring groove flange and flange cover, large diameter, large diameter flange plate the high neck flange, eight blind plate and butt welding ring flanges etc..