I was asked where it can be found that the flanges of equipment used to handle toxic media, as well as the flanges on the piping connections, must be of at least PN16 grade ?

2016-11-15View Original

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I was asked where it can be found that the flanges of equipment used to handle toxic media, as well as the flanges on the piping connections, must be of at least PN16 grade ?

Reply #22016-11-15

It’s a very old regulation issued by the Ministry of Chemical Industry regarding pipe flanges and the selection of gaskets; its title is TC42A5

Reply #32016-11-15

Classification of pipes and fittings, determination of flange grade

Reply #42016-11-17

You can refer to the answers above or look up relevant information

Reply #52020-02-06

I have the same question too! ! ! ! ! ! ! !

Reply #62021-04-30

7.2 in HG/T20583

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