Flange, also called flange flange disk or flange. 

Flange is a shaft and shaft parts connected to each other, for the connection between the end of the pipe; also used in the equipment 

in and out of the stool finger mouth on the flange, for the connection between the two devices, such as reducer flange. 

Flange connection or flange joint, refers to the flange, 

gasket and bolt three interconnected as a group of combined sealing structure of the detachable connection.

Piping flange refers to the piping device in the piping flange, used in equipment refers to the import and export of equipment flange. 

There are holes on the flange, and the bolts make the two flanges several thick to let tightly connected. 

The flanges are sealed with gaskets.

Because the flange has good comprehensive performance, so it is widely used in chemical industry, construction, water supply, 

drainage, petroleum, light and heavy industry, refrigeration, sanitation, plumbing, fire fighting, electric power, aerospace, 

shipbuilding and other basic engineering.