May I ask whether materials such as Q235B can be used in highly or moderately toxic media? Which standards address this aspect?

2019-02-17View Original

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May I ask whether materials such as Q235B can be used in highly or moderately toxic media? Which standards address this aspect?

Reply #22019-02-17

Please first determine whether it is to be used in pressure vessels or pressure pipelines: it cannot be used in pressure pipelines and is only suitable for CD-type fluids. For details, please refer to TSG D0001-2009 and GB50316-2000 (2008 edition), the Code for Design of Industrial Metal Pipelines

Reply #32019-02-17

Personally, I think neither devices nor pipelines are allowed

Reply #42019-02-18

Q235 cannot be used; it is only applicable to fluids of categories C and D, with a design pressure not exceeding 1.6 MPa. For details, refer to GB50316. Extremely toxic or other hazardous substances can be handled using materials such as Q355 or stainless steel

Reply #52019-02-19

It definitely can’t work! GB150 specifies the scope of application for Q235B! See Appendix D of GB150

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