Use parameters: Specifications: 1/2 "to 240" (10-6000) Pressure rating: 0.6Mpa to 32Mpa, 150lb ~ 2500lb PNO.25-PN42.0 pressure vessel standards: be JB1157-82 to JB1160-82, JB4700- 2000 ~ JB4707-2000 Material: carbon steel, stainless steel, alloy steel and other structural features: This product is used in boiler and pressure vessel, petroleum, chemical, shipbuilding, pharmaceutical, metallurgy, machinery, food and other industries. Flange connection is the two pipes, pipe fittings or equipment, between the first respective fixed on a flange, the two flanges, plus flange gasket, bolted together, and complete the connection. Fittings and equipment already comes with flange, also belongs to the flange connection. This connection is mainly used for cast iron pipes, rubber lined pipe, non-ferrous metal pipe and flange valve connection, process equipment and flange connection flange connection. Flange connection of the main features is to facilitate the demolition, high strength, good sealing performance. Flange points threaded connection flanges and welded flanges.