Comparative Analysis of Standards for Welding Procedure Qualification Test at Home and Abroad

The welding procedure qualification test is performed to verify the correctness of the proposed weldment welding process and to evaluate the test process and results. At present, the commonly used welding procedure qualification standards and specifications at home and abroad are mainly GB 50661-2011, NB/T 47014-2011, EN ISO 15614-1:2004+A2:2012, ASME IX-2013, AWS D1.1/D1.1M-2015 and so on. The above standards and specifications were compared and analyzed from the aspects of welding procedure qualification procedure, specimen preparation, test procedure and evaluation basis. The sampling problems of butt joints for tensile, bend and impact test during the qualification were mainly discussed, and the similarities and differences of various standards and specifications were summarized. The results show that each standard or specification has its own requirements in terms of test content, sampling quantity and location, specimen size, etc. Special attentions should be paid during the actual qualification.