Flange connections involve securing two pipes, fittings, or equipment to separate flange discs first, then inserting a flange gasket between them and fastening them together with bolts to complete the connection. Some fittings and equipment come with their own flange discs 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 pressure is low, flange connections are not visible. However, in boiler rooms or production sites, you will find pipes and equipment connected by flanges everywhere.

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