SY/T 6423.5-2014
石油天然气工业钢管无损检测方法第 5部分:焊接钢管焊缝缺欠的数字射线 检测
Petroleum and natural gas industries.Non-destructive testing (NDT) methods of steel tubes.Part 5: Digital radiographic testing of the weld seam of welded steel tubes for the detection of imperfections