This standard specifies the wet magnetic particle inspection of steam turbine blades. This standard is suitable for detecting cracks, hair lines and other defects on the blade surface and near surface.
JB/T 9628-1999 history
2018JB/T 9628-2017 Magnetic Particle Inspection Method for Steam Turbine Blades
1999JB/T 9628-1999 Method of magnetic particle inspection of steam turbine blades