... AC, DC, mixed-type 1. Intelligent magnetic flux leakage testing machine/ MFL2.IDEA-8MFL magnetic flux leakage detector3.AC, DC, ... mixed-typeIntelligent magnetic flux leakage testing machine/ MFL is a new generation of integrated electromagnetic nondestructive testing ... the service pipe, metal parts of the testing, analysis and evaluation. At the same time can be used for boilers, ...