ما هي أنواع وخصائص دلافين الحديد الزهر؟
Chilled cast iron rolls have good wear resistance and smooth surface, and are used for small load finishing rolls.Infinitely chilled cast iron rolls have the characteristics of wear resistance, hot crack resistance and moderate strength, and are used for various hot-rolled strip work rolls, small and wire rod rolls.Ductile cast iron rolls have high strength […]