1.Unidirectional Magnetizing Method : Using either Axial
Current Flow or Coil Technique. One direction of
discontinuity/flaw shall be clearly indicated.
2.Bidirectional Magnetizing Method : Using both Axial
Current Flow and Coil Technique. Two direction of
discontinuity/flaw shall be clearly indicated.
3.Multidirectional Magnetizing Method : Using special
design Magnetizing Technique. Both directions of
discontinuity/flaw on all surface shall be clearly indicated.