LGP-pipe bevel-belt grinding machines Type I/II/III For precise, fast and high quality weld preparation on pipes. The LGP-Series is offered with three different grinding unit variants and for different pipe diameters. Type I: Processing of the bevel from the top, manual control of the grinding unit Type II: Processing of the bevel from the top, automatic control of the grinding unit Type III: Processing of the bevel from above and below, manual and automatic control of the grinding unit.