ICDP rolls is the short of Indefinite Chill Double Poured Cast Iron Rolls, which is a cast iron with fine inter crystalline graphite evenly distributed throughout the working layer of roll barrel. The addition of alloy elements such as Manganese, Nickel, Chromium, and Molybdenum changes the matrix microstructure from pearlite, bainite to martensite. The present of small amount of fine graphite enhances the roll’s resistance to spallling, thermal crack and wearability. This roll has small hardness gradient in the working layer of roll barrel which is widely used on the finishing stand of hot stirp and plate mill.