1.Four-high rolling mill 2.long life 3.the best price 4 ... Specification Type: 820, 750, 650, 600, 520, 450 Max Rolling Power (kN): 6000, 6000, 5000, 3000, 3000, 2500Max ... 40, 40, 20, 20, 20, 20 Operation Roll Max. Rolling Diameter (mm): 480/380/360, 380, 360, 320, 320, ... . Rolling Diameter (mm): 650, 650, 610, 480, 480, 420 Rolling Diameter (mm): 800, 720, 630, 600, 520, 430. Four-High Rolling Mill