... NDT electromagnetic testing/MFL instrument2.magnetic flux leakage testing instrument3. bottom plate MFL testingIDEA-16MFL magnetic flux leakage /MFL detector ... , high-pass: 0hz ~ 2000hzApplicationsApplicable to steel parts, steel billet, round steel. bar, pipe, weld, cable and other ... and evaluation. At the same time can be used for boilers, petrochemical industry, pressure vessels, pipelines, oil ...