Pipeline on-line automatic flaw detection digital imaging system

The utility model discloses a pipeline on-line automatic flaw detection digital imaging system which comprises a rack and a control system, the rack is provided with a rotating mechanism capable of rotating on a vertical plane, the rotating mechanism is hollow, the left end and the right end of the rotating mechanism are open, and the circumference of the rotating mechanism is provided with an X-ray machine and a DR plate which are oppositely arranged. The rotating mechanism is provided with a placing opening for placing a pipeline between the ray machine and the DR plate from the upper portion, a plurality of supports used for supporting the pipeline are arranged at the positions, located at the two ends of the rotating mechanism, of the rack respectively, positioning structures used for positioning the pipeline are arranged on the supports, and an automatic coding machine used for coding the surface of the pipeline is fixedly connected to the DR plate. A center adjusting device used for driving the rotating