Non-destructive testing of steel tubes - Part 4: Automatic full peripheral magnetic transducer/flux leakage testing of seamless ferromagnetic steel tubes for the detection of transverse imperfections; English version of DIN EN 10246-4
钢管无损检测.第4部分:横向缺陷检测用无缝铁磁钢管的全周向自动磁传感器/漏磁检测;德文版EN 10246-4:1999