Home / Standards / GB/T 40385-2021 GB/T 40385-2021 Active Non-destructive testing of steel tubes—Digital radiographic testing of the weld seam of welded steel tubes for the detection of imperfections 钢管无损检测 焊接钢管焊缝缺欠的数字射线检测 Standard Type GBT ICS 77.040.20 CCS H26 Status 现行 Issue Date 2021-08-20 Implementation 2022-03-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A