Butt welding flanges are widely used in pipeline engineering

In pipeline engineering, flanges are mainly used for the connection of pipelines. In the pipelines that need to be connected, install a flange. Low-pressure pipelines can use wire flanges, and welding flanges can be used with pressures above 4 kg. Add a sealing point between the two flanges and tighten them with bolts. Flanges for different pressures have different thicknesses and use different bolts. When water pumps and valves are connected to pipelines, some parts of this equipment are also made into corresponding flange shapes, also called flange connections.

Any connecting parts that are bolted on two planes and closed together at the same time are generally called "flanges". Such parts as the joints of ventilation ducts. These kinds of parts can be called "flange parts". But this connection is only a part of the equipment, Such as the connection between the flange and the water pump, It is not easy to call the water pump "flange parts". Relatively small ones, such as valves, can be called "flange parts".