For the welds of high-pressure pipes in power plants, in addition to non-destructive testing, should hardness testing also be carried out?

2016-08-28View Original

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For the welds of high-pressure pipes in power plants, in addition to non-destructive testing, should hardness testing also be carried out?

Reply #22016-08-28

It is needed. It is generally required that the weld undergo post-weld heat treatment, with a hardness of less than 250HB.

Reply #32016-08-29

Take a look at the standards cited in your design drawings. . A hardness test may be required

Reply #42016-08-29

In accordance with the DL/T438 standard, it is necessary to measure the hardness

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