Flange connections involve securing two pipes, fittings, or equipment to separate flange discs first, then inserting a flange gasket between them and tightening them together with bolts, thereby completing the connection. Some fittings and equipment come with a built-in flange disc, 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 the pipe diameter is small and the pressure is low, flange connections are not visible. However, in boiler rooms or production sites, you will find flange-connected pipes and equipment everywhere.

The types of flange connections, categorized by connection methods, include: flat焊接 plate flanges, welding neck flanges, welding neck lap joint flanges, socket welding flanges, threaded flanges, flange covers, welding neck lap joint loose flanges, flat lap joint loose flanges, ring groove flanges, and ring groove flange covers, large diameter flat flanges, large diameter high neck flanges, blind flanges, and lap joint loose flanges, etc.