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AWS C3.8M/C3.8:2020
Specification for the Ultrasonic Pulse-Echo Examination of Brazed Joints
This specification provides the minimum requirements for the ultrasonic pulse-echo examination of brazed joints. Its purpose is to standardize brazed-joint ultrasonic examination requirements for all applications in which brazed joints of acceptable quality are required. It provides the minimum requirements for equipment, procedures, and the documentation of such tests.
American Welding Society [aws]