Could you help check whether the weld assessments cover the weldments used for boilers?
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There are existing steel pipe weldments for boilers; the weld evaluation specimens were subjected to high-temperature tempering treatment. Currently, there are weldments of this material at the construction site (which are relatively thin) that do not require heat treatment. May I ask whether this weld evaluation can be applied to these weldments? Thank you. Weld evaluation prepared in accordance with NB/T47014.
No, whether heat treatment is applied is an important factor; the evaluation needs to be done again
No, a new weld assessment is required!
Since there are regulations, why not follow them? Are there any exemption conditions in the regulations?
For example, in the case of 15CrMoG, thin workpieces do not require heat treatment, while thicker workpieces do.
There must be specific regulations regarding the thickness; otherwise, how could those who carry out the work follow them? Right?
Above 490 degrees is heat treatment