Product Name：Alloy Steel RJ Flange
1. National standard flange is a general-purpose part, and the outer diameter, screw hole and thickness of various specifications of flange are fixed. Moreover, the safety factor is considered in the national standard flange, so the safety margin of size and thickness is relatively large.
2. Instead of standard flange, it is generally designed by enterprises or individuals to save materials, or to get materials from local sources.
Generally, the non-standard flange will be designed smaller and thinner than the national standard flange to save materials, and the sealing surface form can also be changed, such as sealing with O-ring.
3. The national standard flange can be bought in the market. The non-standard flange must be designed and processed by itself.
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