GB/T 40385-2021钢管无损检测焊接钢管焊缝缺欠的数字射线检测标准
英文:Non-destructive testing of steel tubes—Digital radiographic testing of the weld seam of welded steel tubes for the de...
英文:Non-destructive testing of steel tubes—Digital radiographic testing of the weld seam of welded steel tubes for the de...