Petroleum and natural gas industries--Non-destructive testing (NDT)methods of steel tubes—Part 6: Automated full peripheral flux leakagetesting of seamless and welded ( except submerged arc-welded) ferromagneticsteel tubes for the detection of longitudinal and/or transverse imperfections
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
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