... .ISO9001:2000 We are supplying Chilled cast iron rolls for rubber industry,plastics industry,paper industry ... shell is free from porosity, sand hole, slag inclusion, or other casting defects. 4).When ... of mottled iron formed between the white iron(chill cast iron) and the gray cast iron.When drilled ... 800X2500-4000; 900X2500-4000 Chilled cast iron rolls,chilled rolls, Alloy cast iron roller,mill rolls