What is RT-1 ,RT-2,RT-3 and RT-4?
RT1, RT2, RT3, and RT4 are codes used in the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code to indicate the level of radiography required for butt welds in pressure vessels. What is RT 1? RT1 requires full-length radiography of all butt welds. Joint efficiency is 1. This is the most stringent … Read more