Flange also known as flange or flange plate. Flange is the connect part of pipe and pipe. There are holes on the flange. It is the bolt which connect two flange and sealed with a gasket between the flange. There are sub-thread connection (wire connected) flange and welding flange. The company produces plate flat welding flange, stainless steel flange, socket welding flange, slip on flange, welding neck flange, threaded flange, pressure vessel flange and a series of flange products.