GB/T 34370.9-2020

This standard specifies the magnetic flux leakage testing method for detecting surface and near-surface defects in ferromagnetic materials used in amusement rides, such as steel structural components, axles, and bolts. It is applied during manufacturing, installation, and in-service inspections of equipment like roller coasters, ferris wheels, and carousels to ensure structural integrity and prevent catastrophic failures. The standard is particularly relevant for safety-critical components where conventional magnetic particle testing may be impractical due to coatings or complex geometries.