A laser cleaning system for laser treating a pipe surface includes a frame mountable to an outer circumference of a cylindrical pipe, a plurality of circumferential guide supports mounted to the frame and engageable with the outer circumference of the pipe, and a laser mounted to the frame to generate a laser beam directed toward an exterior surface of the pipe. The frame is movable about the outer circumference of the pipe on the plurality of circumferential guide supports to scan the laser beam circumferentially across the exterior surface.