R.R.Engineers - A Manufacturer and supplier of DDR 20 Inch Refiner Disc Plates in India. We are providing DDR 20 inches (Double Disk Refiners Disc Plates) in CA-40 Grade Casting with dynamic balanced to Pulp and Paper Industries. This disc is in standard size and ready to fit in Double Disc Refiner. We can also customize any refiner discs as per requirement of our customers.