NB/T 47014 Welding Procedure Qualification

  • NB/T 47014 Welding Procedure Qualification

    NB/T 47014 is the core standard for welding procedure qualification of pressure-bearing equipment in China, such as pressure vessels, pipelines, and boilers. It replaces the old **JB/T 4708**. This standard specifies the requirements, test methods, and coverage of welding procedure qualification (WPS/PQR) to ensure the safety and reliability of welded joints.