W铬钼无限冷硬球墨铸铁轧辊
W1镍铬钼无限冷硬球墨铸铁轧辊I(低镍)
W2镍铬钼无限冷硬球墨铸铁轧辊II(中镍)
Unilimited chill cast iron roll
W: Chromium-Molybdenum unlimited chill nodular castiron roll
W1: Nickel-Chromium-molybdenum unlimited chill nodular cast iron roll(low nicket)
W2: Nickel-Chromium-molybdenum unlimited chill nodular cast iron roll(middle nickel) |