Phased array ultrasonic testing of 304 stainless steel weld

This article describes how to follow the ASME code and use the PAUT to substitute RT when there are difficulties in implementing 304 stainless steel weld test block radiographic testing. It includes the test and acceptance standard,test block fabrication, procedures demonstration,process parameters setting,instrument calibration and other relevant requirements. Finally, the feasibility is verified by the actual test data.It is expected to serve as a reference for practical engineering applications.