A flange is a protruding rim, edge, or collar, typically of metal, that is used to strengthen, attach, or provide a connection point. It often has holes drilled through it to allow for bolts or screws to fasten it to another component. Flanges are widely employed in plumbing, piping systems, machinery manufacturing, and many other industrial fields. For example, in a pipeline, flanges at the ends of pipe segments make it possible to join them together tightly, ensuring the leak-free conveyance of fluids or gases. They play a crucial role in maintaining the integrity and functionality of complex engineering setups.

Flange is a disc-shaped component used to connect pipelines, valves, pumps and other equipment, and there are bolt holes around it, which are closely connected with another flange through bolts, and a gasket is placed in the middle to ensure sealing, so that the pipeline system forms a continuous channel to realize the transportation of medium, which is widely used in petroleum, chemical, electric power, construction and many other industries, according to different pressure, temperature, medium and connection needs, there are many types, materials and sealing surface forms to choose from, which plays a key role in the installation of industrial pipelines. It helps to ensure the stable operation and safety of the system, and at the same time facilitates the installation, overhaul and maintenance of equipment, which is an indispensable and important connection in industrial production.