... high rolling mill 2.long life 3.the best price 4.high quality Specification Type: 820, 750, 650, 600, 520, 450 Max Rolling ... , 20, 20, 20 Operation Roll Max. Rolling Diameter (mm): 480/380/360, 380, 360 ... , 320, 320, 320 Min. Rolling Diameter (mm): 460/360/320, 360, 340 ... Rolling Diameter (mm): 650, 650, 610, 480, 480, 420 Rolling Diameter (mm): 800, 720, 630, 600, 520, 430. Four-High Rolling Mill ...