Tool includes a frame having a substantially U-shape opening adjacent one edge for receiving the wall of a welded pipe having an inside burr therealong. The tool is adapted to be suspended in vertical position from an overhead support for movement toward and away from the interior of the end of a pipe and includes a reciprocating tool carriage mounted in its U-shape opening. The carriage is attached to and powered by a pressure fluid cylinder, mounted on the frame, for movement along a way in the U-shape opening. A cutter projects from the tool carriage and is adapted to remove the burr when the tool carriage is moved from a position adjacent the open end of the U-shape opening to a position inwardly of the open end of the opening. A pair of fluid cylinder actuated shoes is provided on the frame for engaging the outer contour of the pipe so as to clamp it between the pair of shoes and another pair of shoes which depend from the tool carriage and engage the inner contour of the pipe astride the burr. Thus the pipe is firmly held when the cutting tool is moved to cut away the end portion of the inside burr.