Common flanges have certain differences in pressure levels due to their use in different places. For example, large stainless steel flanges are mainly used in high-temperature resistant pipelines in chemical engineering, so there are high requirements for their material pressure performance.

　　Therefore, customers often request forged flanges because the material has been forged to increase tissue density and also enhance its pressure bearing capacity.

　　There are clear grade requirements for the compression resistance of large stainless steel flanges in domestic and international standards. Large stainless steel flanges are generally divided into PN25, PN6, PN10, PN16, PN25, PN40, and so on. The most commonly used ones are PN10 and PN16. A flange, also known as a flange or flange. A flange is a component that connects shafts and is used for connecting pipe ends; Also useful are flanges on the inlet and outlet of equipment, used for connecting two devices, such as gearbox flanges.

　　Flange connection or flange joint. It refers to a detachable connection formed by connecting flanges, gaskets, and bolts as a combination sealing structure.

　　The pressure rating of flanges is related to the design pressure to a certain extent, but it is not equivalent. It represents the strength series of a flange. The higher the pressure level, the stronger it will be.

　　To be precise, given the material, design temperature, and design pressure, we can select a type of pipeline in a process device as a pressure level based on the temperature pressure curve on the flange standard, and thus determine the pressure level of valves and other fittings.

　　According to the different flange standard systems, pressure levels can be divided into European and American systems, such as PN1.6, PN2.5, or CL150/PN2.0. When hot, some standards combine the two. Due to being used in different places, the pressure rating of the flange varies to a certain extent. For example, large stainless steel flanges are mainly used in high-temperature resistant pipelines in chemical engineering, so there are high requirements for their material pressure performance.

　　Therefore, customers often request forged flanges because the material has been forged to increase the density of the structure.