We Offer Disc Grinding is the Production of Flat Surfaces By Presenting the Work Piece to the Wheel Face in Horizontal or Vertical Spindle Machines. in Double Disc Grinders Opposite and Parallel Surfaces are Ground Flat At High Rates of Production Providing Good Surface Finish. sterling Offers Specially Designed Disc Grinding Wheels with Special Bond Systems, Which is the Best in India. gardner, Besley, Diskus, Foldage, Nippie, Modular, Parivartan, Omd, Bennet, Rolland.