金属熔化焊对接接头射线检测技术和质量分级
Radiographic examination and quality classification of welded butt joints in metallic materials
2017-11-15
GB/T 12605-2008
无损检测 金属管道熔化焊环向对接接头射线照相检测方法
Non-destructive testing － Test methods for radiographic testing of circumferential fusion-welded butt joints in metallic pipes and tubes