Non-destructive testing of steel tubes - Part 18: Magnetic particle inspection of the tube ends of seamless and welded ferromagnetic steel tubes for the detection of laminar imperfections; English version of DIN EN 10246-18
钢管无损检测.第18部分:检测层状缺陷用无缝和焊接铁磁钢管管端的磁粉探伤;德文版EN 10246-18:2000