Flange connections involve securing two pipes, fittings, or equipment to separate flange disks first, then joining the two disks together with a flange gasket and螺栓. Some fittings and equipment come with flange disks as standard, which also fall 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, you might 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 abundant on pipes and equipment.

According to the type of connection, flange connections can be classified into: flat焊接flanges, neck welding flanges, neck butt welding flanges, socket welding flanges, threaded flanges, flange covers, necked butt welding ring-type loose flanges, flat welding ring-type loose flanges, ring groove flanges and flange covers, large diameter flat flanges, large diameter high-neck flanges, winged blind flanges, and butt welding ring-type loose flanges, etc.