... .vitrified cup grinding wheel used for the work pieces made of materials Chilled steel, 2High-speed steel, High-carbon steel 1.vitrified cup grinding wheelhas ... can be used widelysuitable for normal steel grinding, grinding, rough grinding, higher anti-pulls Intensity metal grinding as well, i.e.White aluminum ... metallic and Nonmetallic material, i.e. single alundum vitrified cup grinding wheel