Gruvmaster? GHM-2X Roll Grooving Machine is a heavy duty grooving machine designed for grooving 2" to 12" schedule 10 to 40 pipe electrically by hydraulic feeding. Powered by a 750W universal motor and heavy-duty transmission, it produces high quality grooves consistently and effortlessly. Heavy duty design permits GHM-2X to groove massive quantities of thick wall pipes in high efficiency.