Flange connections involve securing two pipes, fittings, or equipment to separate flange discs first, then inserting a flange gasket between the two discs and fastening them together with bolts to complete the connection. Some fittings and equipment come with a flange disc already attached, 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, 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.

According to the connection method, flange types can be classified as: flat焊接 plate flange, necked焊接 flat flange, necked welding neck flange, socket welding flange, threaded flange, flange cover, necked welding neck loose flange, flat welding neck loose flange, ring groove face flange and flange cover, large diameter flat flange, large diameter high neck flange, blind flange, welding neck loose flange, etc.