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See Chinese contents: GB/T 34370.3-2017 GB/T 34370.3-2017: Nondestructive testing of amusement equipment -- Part 3: Magnetic particle testing
This Part of GB/T 34370 specifies the yoke method, coil method and current flow method of the magnetic particle testing method and the requirements for quality grading of amusement equipment. This Part applies to the testing of defects on the surface and near surface of ferromagnetic raw materials, parts and welded joint of amusement equipment. This Part does not apply to the testing of austenitic stainless steel and other non-ferromagnetic materials.
