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ASTM A388/A388M-15
- Standard Practice for Ultrasonic Examination of Steel Forgings
- standard by ASTM International, 07/15/2015
- Publisher: ASTM
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1.1 This practice2 covers the examination procedures for the contact, pulse-echo ultrasonic examination of steel forgings by the straight and angle-beam techniques. The straight beam techniques include utilization of the DGS (Distance Gain-Size) method. See Appendix X3.