Flange connections involve securing two pipes, fittings, or equipment to each side of a flange disk, then inserting a flange gasket between the two flanges and tightening them together with bolts to complete the connection. Some fittings and equipment come with a built-in flange disk, which also falls under flange connections. Flange connections are a crucial method in pipeline construction. They are convenient to use and can withstand high pressure. In industrial pipelines and residential settings, where pipe diameters are small and the 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.

Flanged connections can be categorized by their connection methods, including: flat焊接flange, socket焊接flange, blind焊接flange, slip-on flange, threaded flange, flange cover, ring-type joint loose flange, flat ring-type joint loose flange, ring groove face flange and cover, large diameter flat flange, large diameter long neck flange, winged blind flange, and loose flange with welding ring, etc.