... in various types of non-ferrous metal, ferrous metal pipes, rods, wire, wire, profiles online and offline testing. It has ... a high defect detection sensitivity in metal tubes, rods, wire, wire, profiles of the defects such as surface cracks ... line nondestructive testing3,Nondestructive testing such as Oil casing, sucker rods, hollow shaft4,Detection such as Condenser tubes, air conditioner pipe ...