Flange connections involve securing two pipes, fittings, or equipment to separate flange plates first, then placing a flange gasket between them and fastening them together with bolts, completing the connection. Some fittings and equipment come with a built-in flange plate, which also falls under flange connections. Flange connections are an important method of pipe construction. They are convenient to use and can withstand high pressure. In industrial piping and residential settings, where pipe diameters are small and pressure is low, flange connections are not visible. However, in boiler rooms or production sites, flange connections are widespread on pipes and equipment.
Flanged connections can be categorized by type of connection as: flat welding flange, socket welding flange, slip-on flange, threaded flange, blind flange, loose-tight flange with neck, flat loose-tight flange, ring groove flange, and blind flange, large diameter flat flange, large diameter high-neck flange, winged blind flange, and slip-on ring flange, etc.
