CZQ-4000 Three-phase full-wave ac/dc fluorescent magnetic powder flaw detection machine for small and medium-sized parts A,Equipment Name, Model, Brand and Manufacturer1,Name Three-phase full-wave ac/dc fluorescent magnetic powder flaw detection machine2,Model CZQ-4000B,Design standard & basis1,Equipment design and manufacturing standards: the national standard GB3721-83 "magnetic powder flaw ...