ASTM E 273 - 93. Standard Practice for Ultrasonic Examination of Longitudinal Welded Pipe and Tubing

American Society for Testing and Materials (ASTM). 1993, 3 pages.
This practice describes general ultrasonic test procedures for the detection of discontinuities in the weld and adjacent heat affected zones of pipe and tubing. It is intended for tubular products having diameters $2 in. ($50 mm) and wall thicknesses of 1⁄8 to 11⁄16 in. (3 to 27 mm).