Inthe upper layer ofthe double-layer uneven-density steel trail grinding wheels:

 In the upper layer of the double-layer uneven-densiy steel ral grinding wheels produced by MONDIA Company,high-density structure is adopted,with various consubstantial steel ring-shaped metal matrix embedded,which has the characteristics to prevent loosening of positioning: the lower layer is made with special technology including using high wear-resistant, high hardness, good-toughness and good self-sharpening abrasives and high strength resin against the materlal of the steel rails; which greatly meets the operational requirements, thereby enhancing the grinding efficiency. The product's cost performance is high, and the grinding volume is raised by over 55% more than the ordinany grinding wheels.