The Recommendation of Detailed Classifications for Welded Joints Quality Classifying Table of Standard JB/T 4730.3

This paper made the analysis for the difficulties faced by common UT inspectors during study of welded joints quality classification method of standard JB/T 4730.3 firstly, then proposed classifying method by chart form, made detailed classifications of the welded joints quality classifying table in JB/T 4730.3, in order to easily understand welded seam quality classifications by UT inspectors.