Loose flanges: loose set flange commonly known as live set flange, sub-welding ring live set flange, flip-side live set flange and welding live set flange. Often used in the medium temperature and pressure are not high and the medium is more corrosive.When the medium is highly corrosive, the part of the flange contact medium (the flip-side short section) is a high-grade corrosion-resistant material such as stainless steel, while the external uses low-grade materials such as carbon steel material flange ring clamping it for sealing.
integral flange: often flanges and equipment, pipes, fittings, valves, etc. into one, this type is commonly used in equipment and valves.