GB/T 40791-2021钢管无损检测焊接钢管焊缝缺欠的射线检测标准
英文:Non-destructive testing of steel tubes—Radiographic testing of the weld seam of welded steel tubes for the detection ...
英文:Non-destructive testing of steel tubes—Radiographic testing of the weld seam of welded steel tubes for the detection ...