R.R.Engineers - A Manufacturer and supplier of TDR 21 Inch Refiner Disc Plates in India. We are providing TDR 21 inches (Triple Disk Refiners Disc Plates) in CA-40 Grade Casting with dynamic balanced to Pulp and Paper Industries. This disc is ready to fit in any Triple Disc Refiner with standard Size. We can also customize any refiner discs as per requirement of our customers.