What kind of material does your company make to rolls?

For rolls material,here we have steel rolls also with iron rolls. For steel rolls,we have material high chromium steel roll,high speed steel roll,graphite steel roll,ssemisteel roll and the other material which is based on the requirement from the customers. For iron rolls,we have chilled cast iron roll,infinite chilled cast iron roll,spheroidalgraphite roll,high chromium cat iron roll and the others which is based on the requirement from custoemrs.