High-pressure flange: a flange used for connecting pipes or equipment with a pressure higher than 10MPa. At present, it mainly includes traditional high-pressure flanges and high-pressure self-tightening flanges.
High-pressure flanges refer to flanges that exceed the standards of relevant departments in the world, usually refer to rolled flanges with standards greater than DN2000 and above, and the largest standard in the world flange standard GB/T9119-2000 is DN2000. The production of this kind of flange requires the construction party to provide drawings. There are two production processes: casting and rolling. The cost of rolling flanges is lower than that of casting, but some super-large diameter flanges cannot be cast. Such products are mostly calculated by theoretical weight. The raw materials are Stainless steel, carbon steel and alloy steel.
For high-pressure flanges of 3 meters and above, pay attention to the transportation matters when ordering the contract. The height limit of expressways or general viaducts is 4.5 meters. The diameter of the flange itself is 3 meters, and then the diameter of the truck itself is about 1.5 meters. The height will be unreachable. Assuming lateral transport, a large flange of 3 meters would also exceed the width of the carriageway. If the problem of distribution is not handled well, it will cause certain difficulties in transportation.
Maintenance method of high pressure flange:
Then we must adopt the method of maintaining high-pressure flanges as soon as possible. For enterprises, it is necessary to understand all the factors and various data of flanges, and also to know how to properly use and deal with these small problems. We can follow the editor to analyze the chemical composition of the flange weld and the description of the manufacturing process. What are the main characteristics of the flange? Assuming that the pipe wall will become thinner after the flange is corroded, then we will use the maintenance flange prematurely. way to avoid pipeline leakage.
