RTZM4 Glass Straight line edging machine is designed for grinding straight line flat edging and 45°arris of different sizes and thickness. Coarse grinding, refine grinding, polishing, and angle-making can be completed in one process. The speed can be widely adjusted by its stelpless regulator. Speed alteration is very smooth. In grinding operation, feeding and operation speed can be adjusted at random. Front rails can be adjusted to fit varied thickness of processed glass. And it is featured in advanced structure, high precision, easy handling, and high efficiency, it is one of indispensable equipment for glass procession.