Nikhil Roll Castings Pvt. Ltd. Manufactures Chill Roll Centrifugal Castings. Nikhil Roll Castings Pvt. Ltd. Has been awarded an ISO 9001 certifications. Chill Roll Centrifugal Castings is available in all grades like in grey cast iron, spheroidal iron, chilled cast iron & Ni-hard. Chill Roll Centrifugal Castings & cylinder liners are produced as per specific requirements to suit particular applications of the end users. The diameter of the centrifugal castings is up to 32 inches or 810 mm and length is up to 72 inches or 1800 mm.