Flange connections involve securing two pipes, fittings, or equipment to separate flange plates first, then inserting a flange gasket between the two plates and fastening them together with bolts to complete the connection. Some fittings and equipment come with built-in flange plates and are also considered flange connections. Flange connections are an important 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.

The types of flange connections, categorized by connection method, include: flat焊接flanges, neck焊接flanges, socket焊接flanges, slip-on焊接flanges, threaded flanges, flange covers, neck socket焊接ring flanges, flat ring socket焊接flanges, ring groove flanges, and covers, large diameter flat flanges, large diameter long-neck flanges, winged blind flanges, socket焊接ring flanges, etc.