ASTM E 213 - 98. Standard Practice for Ultrasonic Examination of Metal Pipe and Tubing

American Society for Testing and Materials (ASTM). 1998, 5 pages.
This practice covers a procedure for detecting discontinuities in metal pipe and tubing using pulse-reflection ultrasonic contact or immersion angle beam techniques. Artificial discontinuities consisting of longitudinal reference notches are employed as the primary means of standardizing the ultrasonic
system. If transverse as well as longitudinal examination is desired, a procedure for employing transverse notches is provided.