Can 8-character blind plates be used in low-temperature environments?

This post was last edited by ylb913 on 2016-4-2 at 10:52. According to GB50316-2000 Code for Design of Industrial Metal Piping, in cases where the fluid temperature is below -5°C or where atmospheric corrosion is severe, it is advisable to use separate blind plates, namely plug plates and gasket rings. It is not advisable to use an 8-shaped blind flange. My understanding of this is as follows: 1. In situations where \"atmospheric corrosion is severe,\" the environment will cause corrosion to occur on the half of the 8-shaped blind plate that is exposed. 2. When the temperature of the medium drops to a certain level, heat conduction can cause the exposed parts of the 8-shaped blind plate to become too cold, resulting in the formation of dew on its surface and accelerating its electrochemical corrosion. 3. “The half of the 8-shaped blind plate that is exposed to the outside has corroded,” and it is essentially unusable now. Therefore, the plate and the ring must be separated; the “plate” or “ring” that is not in use should be stored separately. ——The method of separating the plate rings and using them as backups depends on the specific conditions of the piping; in many cases, after removing the blind flange, the front and rear flanges can be directly connected, though there are also situations where rings are necessary.

No, the first-floor review is quite objective