KS D ISO 9402-2002(2012) 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 longitudin
2002KS D ISO 9402:2002 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