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See Chinese contents: NB/T 47018.4-2017 NB/T 47018.4-2017: Technical permission of welding materials for pressure equipment. Section 4: Electrodes and fluxes for submerged arc welding
This Part of NB/T 47018-2017 specifies the technical requirements, test methods and product marking of welding wire and flux for submerged arc welding. This Part is applicable to carbon steel welding wire and flux, low-alloy steel welding wire and flux, and stainless-steel welding wire and flux for submerged arc welding for pressure equipment.
