The robot cutter not only cuts projecting gaskets and service pipes as well as aggregated material on the pipes, but has the specific function of re-opening, from the inside, any in-line lateral service pipes lined with “braid” or part-liner. The robot is pulled by a winch to the point to be re-opened. A telecamera follows its movements, which are remote-controlled by one of our operators who makes it move forward, rotate and cut.