1. Applicable to detect the surface of ferromagnetic materials, such as: surface cracks and other defects that can not be seen. It is not suitable to detect the internal defects of the deep buried ultrasonic flaw detector.
2. Suitable for the detection of Fe-Ni alloy based ferromagnetic materials, such as: austenitic stainless steel plate and hardened stainless steel plate, is not suitable for the detection of non-permanent magnetic materials, such as: martensite stainless steel plate.
3. It is suitable for testing raw materials (such as slabs) and semi-finished products in production and processing, finished products and in service and applied workpiece.
4. It is suitable for testing pipe fittings, bar material, sheet forming material, forged steel parts, stainless steel castings and welds.
5. It is suitable for testing the defects of the workpiece surface of the flaw detection instrument and the vertical orientation of the widened bearing and the magnetic induction line as far as possible, but it is not suitable for testing the defects of the intersection Angle of the widened bearing and the magnetic induction line of the industrial flaw detector less than 20 degrees.
7. It is suitable for the detection of small defects on the surface of the workpiece, and it is not suitable for the detection of shallow and wide defects.