Socket welding flange connection is an important connection mode for pipeline construction.Flange connection is the two pipes, pipe fittings or materials, first fixed on a flange plate, two flange plate, with flange pad, fastened together with screws, complete the connection.Some pipe fittings and appliance materials have come with flanges, which also belong to flange connection.
 

Socket welding flanges are divided into threaded joint (wire) flanges and welded flanges.Low pressure small diameter wire flange, high pressure and low pressure large diameter are the use of welding flange, flange thickness of different pressure and the diameter and number of connecting screws are different.According to the pressure level, flange gaskets also have different materials, from low pressure asbestos gaskets, high pressure asbestos gaskets to metal gaskets.Flange connection is convenient to use, can bear a large pressure.In the industrial pipeline, socket welding flange connection is widely used.