Finishing and removing imperfections of square and rectangular tubes, flat bars or any flat component with different combinations of abrasive belt and brush stations. Smooth finishing after belt grinding operation with non-woven brush. High quality of surface finishing on stainless steel tubes, tube after tube. Pneumatic oscillation of abrasive belt in order to keep constant track of the abrasive belt. Tool-free abrasive belt replacement. Fast and easy belt change in few seconds. FG machines have a constant working height. The adjustment for different thicknesses is made by the movement of the abrasive stations, keeping the conveyor belt always at the same level. This helps the work of long tubes and bars without having to adjust roller tables.