Non-destructive testing of steel tubes - Part 9: Automatic ultrasonic testing of the weld seam of submerged arc welded steel tubes for the detection of longitudinal and/or transverse imperfections; English version of DIN EN 10246-9
钢管无损检测第9部分:埋弧焊钢管焊缝纵向和/或横向缺陷自动超声波检测;德文版EN 10246-9:2000