PRB-I, II, III, IV test blocks - Welded joint phased array test blocks
PRB test block is suitable for phased array ultrasonic testing of welded joints of type I in-process and in-process metal equipment. When the size of the test block meets the testing requirements, CSK-IA series test block described in NB/T 47013.3 can also be used, and the use range is implemented according to the provisions of NB/T 47013.3. It is not applicable to the test of the corner joint of the pipe seat with an inner diameter less than 200mm.
