Flange, also known as flange flange disk or protruding edge.Flanges are the parts connected between shafts, used for connection
between pipe ends;Flanges are also used on equipment inlet and outlet for connection between two devices, such as reducer flanges.
Flange connection or flange joint, is refers to the flange, gasket and bolt three mutually connected as a group of detachable
sealing structure.When the pump and valve are connected to the pipe, the parts of these equipment are also made into corresponding
flange shapes, also known as flange connections.General in two plane periphery USES bolt to connect the connection part that
closes at the same time, call commonly "flange", be like the connection of ventilated duct, this kind of part can call "flange
kind part".But this kind of connection is only a part of the equipment, such as flange and water pump connection, it is not good
to call the water pump "flange parts."Smaller such as valves, can be called "flange parts."