... ,yuken valves 2 years warran Rolling Machine,plate rolling machine,rolling bending machine:W11-12×3200 rolling machine 1, machine usage range:This equipment is ... sheet metal: 245Mpa3, main structure and working principle3-1,this machine is upper roller adjust type, and upper roller in middle ... main speed reducer drive two down rolls by one group gears, the direction adjusted by the main motor.3-4 upper ...