Product Name：Alloy Steel Welding Neck Flange
Butt welding flange is a kind of pipe fitting. It refers to the flange with neck and transition of round pipe and butt welding connection with pipe. The butt welding flange is not easy to deform, well sealed, widely used, with corresponding rigid and elastic requirements and reasonable butt welding thinning transition. The distance between the welding junction and the joint surface is large, and the joint surface is free from welding temperature deformation.
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The working pressure of the necked flange is the pressure parameter of a flange, and the material is different from the working temperature. The working pressure of the neck flange is also different. How is the working pressure of neck flanges designed?
The pressure of the non-impact working pressure of the necked flange is not exactly the same as the so-called design pressure and the maximum working pressure, also called the maximum operating pressure. The former emphasizes the stability and continuity of flange pressure, which is a very ideal pressure state, while the latter often includes pressure fluctuations and represents its peak value. Neck flange has good comprehensive performance, so it is widely used in basic projects such as chemical industry, construction, water supply, drainage, petroleum, light and heavy industry, refrigeration, sanitation, plumbing, fire fighting, electric power, aerospace, shipbuilding, etc.
The working pressure of the necked flange refers to the highest pressure value that may appear on the top of the pressure vessel under normal operating conditions. Design pressure, that is, the pressure used to determine the shell of the vessel under the corresponding design temperature, and its value shall not be less than the maximum working pressure.
Large diameter flange standard size standard and classification:
Common production standards: Ministry of Chemical Industry standard HG/T20592-2009, HG/T20615-2009, national standard GB/T9115.1-2000, GB/T9115.2-2000, GB/T9115.3-2000, GB/T9115.4 -2000, Ministry of Machinery Standard JB/T86.2-94, Marine Standard CB/T47-1999
When we all choose large-diameter flanges, when we choose this kind of flange, we should all pay attention to these standard sizes of large-diameter flanges. Which standard flange you choose depends on your needs. To choose.
