Another with steelskin belt with asbestos tape winding of spiral wound gasket. Ordinary rubber gasket is suitable for the occasion of temperature below 120 ℃; Asbestos rubber gasket suitable for vapor temperature below 450 ℃, the oil temperature is below 350 ℃, pressure is lower than 5 mpa, for general corrosive medium, the most commonly used is acid-proof asbestos board. According to the connection parts of flange and flange can be divided into the container.
According to the structure, special steel flange with integral flange, flange and threaded flange. Common integral flange are flat welding flange and butt welding flange. It can be made of casting and become, also can be made up of threaded connection or welding. By a flange (flange, flange connection to be), a gasket and a number of bolt and nut. The gasket in between the two flange sealing surface and tighten nut, washer on the surface of a pressure deformation after reaching a certain value, fill and seal surface uneven, not to join together. Flange connection is a detachable connection.
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