What is flange
Flange is a kind of pipe fittings,almost flanges are used by pairs,and they are widely used in pipe-system. In pipe system,flange is used to connect pipe and pipe. Usually we install a flange plate in a pipe that needs to be connected.thread flange is used in low pressure pipe and welded neck flange is used at more than 4KG pressure.Put the gasket between two pairs of flanges and then screw up them with the bolts and nuts. Attention,the bolts & nuts must fit for the flange.