ASTM E 309 - 95. Standard Practice for Eddy-Current Examination of Steel Tubular Products Using Magnetic Saturation

American Society for Testing and Materials (ASTM). 1995, 5 pages.
This practice covers a procedure for applying the eddy-current method to detect discontinuities in ferromagnetic pipe and tubing (Note 1) where the article being examined is rendered substantially non-magnetic by the application of a concentrated, strong magnetic field in the region adjacent to the examining coil.