Flange connections involve fixing two pipes, fittings, or equipment to separate flange plates first, then placing a flange gasket between them and securing them together with bolts to complete the connection. Some fittings and equipment come with a flange plate already attached, which also falls under flange connections. Flange connections are a crucial method in pipeline construction. They are convenient to use and can withstand significant pressure. In industrial pipelines and residential settings, you may not see flange connections when the pipe diameter is small and the pressure is low. However, in boiler rooms or production sites, you'll find pipes and equipment with flange connections everywhere.

Flanged connections can be categorized by their connection methods as follows: flat welding flange, socket welding flange, blind flange, threaded flange, flange cover, loose fit ring socket welding flange, flat ring socket welding flange, ring groove flange and flange cover, large diameter flat flange, large diameter high neck flange, winged blind flange, socket welding ring socket flange, etc.