The experience of intra pipe automated ultrasonic system AVGUR-T application is given in the article. The system was used for technical condition estimation of factory insulated pipes at the process of technological pipelines general repair. Possibility of AVGUR-T application for main metal integrity testing is shown. It is marked that after taking off the insulation some surface defects in factory longitudinal welds were detected; they had small linear sizes and depth. To solve this problem it is necessary to have more sensitive single-pass weld inspection methods (without transversal scanning) from inner surface.