What information can we obtain from flange standards?

The meaning isn’t clear; it’s difficult for us to know what to answer you

From the flange standards, it is possible to determine the flange’s pressure rating (PN), nominal diameter (DN), range of applications for the flange, manufacturing requirements, the curvature of the flange neck, the number and size of screw holes, as well as the thickness and size of the flange, and what type of sealing mechanism it uses. Using flange standards, select the sealing type of the gasket, its size, the number of bolts as well as their size and length, and the applicable range of the flanges.

Firstly, it is recommended that you take a look at the French standards; SH, HG, JB, etc. will all do. At least you should be familiar with them, and after reading them you will know what information you can obtain. Flange standards are something you must adhere to; you should choose the appropriate flange based on your actual conditions.

Reply 1# wjh0210 to all the seniors. . . What information can we obtain from flange standards? ? ? ? How to utilize flange standards? ? ? What to choose? ? ? To simplify calculations, reduce costs, and improve interchangeability, countries around the world have established a range of flange standards. In actual use, standard flanges should be preferred as much as possible. Only large diameters should be used. Flanges are designed separately only for special working coefficients and structural forms. Flange standards are divided into two sets based on their application: flange standards and vessel flange standards. The standards for container flanges are JB/T 4700-4707 \"Flanges for pressure vessels\". Pipe flanges are marked with the European and American systems. In China, there are standards such as GB 9112 \"Steel Pipe Flanges\", JB/T 74-90 \"Pipe Flanges and Gaskets\", and HG20592-20635 \"Steel Pipe Flanges, Gaskets, and Fasteners\". By referring to these standards and using the nominal diameter and nominal pressure of the flange being designed, it is possible to determine the appropriate dimensions.

First, you need to choose a standard, such as HG or some other standard; thereafter, you can find various types of flanges, including WN, SO, etc. Depending on your needs, you should check the values for DN and PN, as well as all the detailed dimensions of the flanges

By studying various flange standards, you can obtain the answer you want. As for how to make the choice, it depends on the situation in which you will use them: the European standard for steel pipe flanges (DIN standard), the American standard for steel pipe flanges (ANSI standard), and so on. These standards can be downloaded from the Internet; by studying them carefully, you will understand.

Flange standards can provide us with the desired flange information. You can have whatever you want.

Flange standards allow for the identification of bolts, gaskets, and pipes.