Ultrasonic Examination IAW ASME Section V This purpose of this procedure is to provide instructions and establish techniques for the manual ultrasonic examination (UT) of full penetration butt and T-joint welds from 10 mm to 150 mm thick (3/8 inch to 6 inches) in wrought (rolled, drawn, forged, or extruded) and cast materials as required in accordance with requirements of the referenced codes or standards.