Questions regarding welding procedure qualification

2018-05-17View Original

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I would like to ask the teachers: is there any standard that states that the materials used for welding procedure qualification should be from the same steel manufacturer as those used in actual construction? Article 7.1 of GB/T26978.2-2011 states this, but NB/T47014-2011 does not have such a requirement – is it necessary to comply with it?

Reply #22018-05-17

Pressure vessels do not have such requirements; the material only needs to meet NB/T 47018 standards, with no restrictions on the manufacturer.

Reply #32018-05-17

Pressure vessels do not have such requirements, and the manufacturer of the material is not specified.

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Questions regarding welding procedure qualification

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