How to determine the blind plate size and pressure rating based on its diameter
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There is a batch of blind flanges for which the dimensions and pressure rating are not indicated. The only thing that can be done at present is to measure their diameter; so how can the dimensions and pressure rating of these blind flanges be determined based on this diameter?
Confirm the diameter, thickness, and type of sealing surface, then you can check a table to verify it
Does the material not have a certificate of conformity? No stamp applied? Can I refuse it? If it must be used, measure the dimensions yourself and compare them with the corresponding blind flange standards. Such as ASME B16.5
Isolation blind plates are usually about 3 inches thick. I’m looking for the diameter of a blind plate of a certain size and weight class; I couldn’t find it online. Is there such a table available?
It wasn’t done properly – there was no stamp applied, so it’s quite troublesome.
There are tables available, with standards such as American standards and Chinese standards; there are many types of flanges.