KS D ISO 9402-2002 受压力的无缝和焊(埋弧焊除外)接钢管.纵向缺陷检验用全周边磁换能器/铁涂氧磁管漏磁检验
Seamless and welded(except submerged arc-welded) steel tubes for pressure purposes-Full peripheral magnetic transducer/flux leakage testing of ferromagnetic steel tubes for the detection of longitudinal imperfections