Non-destructive testing of steel tubes - Part 17: Ultrasonic testing of tube ends of seamless and welded steel tubes for the detection of laminar imperfections; English version of DIN EN 10246-17
钢管无损检测.第17部分:检测层状缺陷用无缝和焊接钢管管端的超声波检测;德文版EN 10246-17:2000