Flange is a disc-shaped part, which is the most common in pipeline engineering. Flanges are used in pairs. All connecting parts that are connected by bolts on two planes at the same time are closed at the same time, they are generally called “flanges”, such as the connection of ventilation pipes, this type of parts can be called “flanges Class parts”. When water pumps and valves are connected to pipelines, parts of these equipment and equipment are also made into corresponding flange shapes, also known as flange connections.
But this connection is only a part of the equipment, such as the connection between the flange and the water pump, it is not good to call the water pump “flange parts” . Smaller ones, such as valves, can be called “flange parts”. In pipeline engineering, flanges are mainly used for pipeline connection. In the pipelines that need to be connected, a flange plate is installed for various installations. The low-pressure pipeline can use the wire connection flange, and the welding flange is used for the pressure above 4 kg.