... material Product Discription Vitrified Bonded Grinding Wheels are used for grinding, lapping, honing and polishing. The characteristics of a grinding wheel ... grade, bond, structure, shape and dimensions.Vitrified Bonded Grinding Wheels Comparison Chart For Hardness Grade ChinaGB2484-2495-84RussiaAmerica NortonUniversal Co ... ,F1000,F1200Mirror finish grinding, precision grinding. cup grinding wheels