BS EN 10246-4:2000
钢管的无损检验.横向缺陷探测用无缝铁磁性钢管的自动全周界磁力换能器/磁力线渗漏检验
Non-destructive testing of steel tubes - Automatic full peripheral magnetic transducer/flux leakage testing of seamless ferromagnetic steel tubes for the detection of transverse imperfections