Flange connections involve securing two pipes, fittings, or equipment to separate flange disks first, then joining the two flange disks together with a flange gasket and螺栓, thereby completing the connection. Some fittings and equipment come with a built-in flange disk, which also falls under flange connections. Flange connections are an essential method in pipeline construction. They are convenient to use and can withstand high 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, flange connections are普遍 found on pipelines and equipment.

The types of flange connections, categorized by the method of connection, include: flat焊接flanges, socket焊接flanges, slip-on焊接flanges, threaded flanges, blind flanges, ring-type joint flanges, loose ring flanges, lap joint flanges, large diameter flat flanges, large diameter long neck flanges, bevelled blind flanges, and loose ring welding flanges, etc.