Q铬钼无限冷硬球墨铸铁轧辊
Q1镍铬钼无限冷硬球墨铸铁轧辊I(低镍)
Q2镍铬钼无限冷硬球墨铸铁轧辊II(中镍)
Q3珠光体球墨铸铁轧辊
Q4贝氏体球墨铸铁轧辊 Nodular Cast iron Roll
Q: Chromium-Molybdenum unlimited chill nodular cast iron roll
Q1:Nickel-Chromium-Molybdmum unlimited chill nodular cast iron roll(low nickel)
Q2:Nickel-Chromium-Molybdmum unlimited chill nodular cast iron roll(middle nickel)
Q3:Pearlitic nodular cast iron roll
Q4:Bainito nodular cast iron roll