Flange connections involve fixing two pipes, fittings, or equipment to separate flange plates first, then placing a flange gasket between the two flanges and securing them together with bolts to complete the connection. Some fittings and equipment come with a built-in flange plate, which also falls under flange connections. Flange connections are an essential method for pipeline construction. They are convenient to use and can withstand high pressure. In industrial pipelines and residential settings, where pipe diameters are small and pressure is low, flange connections are not visible. However, in boiler rooms or production sites, you'll find flange connections on pipes and equipment everywhere.

The types of flange connections according to the connection method include: flat焊接plate flanges, welding neck flanges, welding neck lap joint flanges, socket welding flanges, threaded flanges, flange covers, welding neck lap joint loose flanges, flat lap joint loose flanges, ring groove flanges, and flange covers, large diameter flat flanges, large diameter high neck flanges, ganged blind flanges, and welding neck loose flanges, etc.