Selection of standard for takeover flange
Thread Content
For a pressure vessel designed for a pressure of 150, is it acceptable to use Japanese standard flanges for the connection flanges?
Of course, isn’t it more convenient to use those that meet national standards?
Definitely not; GB150 recommends pipe flanges HG20592
During the review, the expert already discussed this issue
If it is JPI 7S-15, HG/T20615 can be used; the dimensions of the two standards are similar, so they can be used together. There was a project previously that required ASME B16.5, but during the review it was changed to HG/T20615.
Wouldn’t it be better to use the European or American standards set by the Ministry of Chemical Industry?
Isn’t it good to use national standards? In the future, if it breaks, it’s easy to buy replacement parts, as they’re in stock. It still needs to be custom-made using other standards!
It’s fine as long as the calculation meets the requirements. That is, it is calculated based on flanges of special (non-standard) sizes.