石油天然气工业 钢管无损检测方法 第8部分:无缝和焊接(埋弧焊除外)钢管纵向和/或横向缺欠的全周自动超声检测
Petroleum and natural gas industries—Non-destructive testing (NDT) methods of steel tubes—Part 8: Automated full peripheral ultrasonic testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of longitudinal and/or transverse imperfections