Pump flange refers to a basic component to strengthen the connection of pipelines, usually connected with pipelines, pump casing and other equipment, used to connect, seal, support and fix equipment. It is a circular disk-like structure, made of steel, stainless steel, aluminum alloy and other materials refined, divided into internal thread, external thread, flange and sealing ring and other parts. The flange is tightly connected to the device by fastening bolts to ensure the firm connection and tightness of the pipeline. It can connect different pipes, equipment, valves, etc., to form a complete process; In addition, it can also play a role in installing, supporting and fixing equipment to avoid problems such as shaking and imbalance during the use of equipment. The sealing performance of the pump flange is also very important, which can effectively prevent impurities, gases, liquids, etc. from entering the pipeline in the environment, and ensure the safe and stable operation of the entire process. When selecting the pump flange, it is necessary to fully consider its use scenario, medium characteristics, material quality and other factors. During installation and use, some small details need to be paid attention to ensure that the flange can effectively play its advantages.