1)ZDW12 series 4-rolling machine 2)rolling machine and plate rolls 3)4-rolling machine 4)colling machine/forming machine ZDW12 series 4-rolling machine,rolling machine,colling machine,forming machineW12 4-roll rolling machine with mechanically-driven up-roll, and hydraulically-driven low-roll and side-roll, is electrically controlled.The machine can finish pre-changing of two ends of plates, ...