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See Chinese contents: NB/T 47014-2023 NB/T 47014-2023: Welding procedure qualification for pressure equipments
This document specifies the rules, test methods, qualified indicators for welding procedure qualification for pressure equipment (boilers, pressure vessels, pressure pipes). This document is applicable to welding procedure qualification for welding methods such as gas welding, arc welding, submerged arc welding, gas tungsten arc welding, gas metal arc welding (including flux-cored arc welding), electroslag welding, plasma arc welding, friction welding, electrogas welding, stud arc welding, electron beam welding. This document is not applicable to welding procedure qualification for gas cylinders.
