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NB/T47018-2017

2019-09-30View Original

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According to NB/T47018-2017, the inspection items for welding materials used in pressure equipment require chemical analysis of wires and fluxes. Page 8 of NB/T47018-2017 specifies that this chemical analysis refers to that of the weld metal formed from the wires and fluxes, not of the wires themselves. Then why do the quality assurance documents provided by manufacturers of wires and fluxes include only chemical analysis reports related to the wires?

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