... plates 3).Synchronous control by PLC 4).Rolling O,U,R 5).ISO9001:2000 certicated Main characteristicHigh-precision end of the ... &BNC.Many kinds of shapes of the O-type, U-type, multi-paragraph R,cone cylinder auxiliary device, you can roll a range ... back way; U-bend: the way forward bending. Bend with type R,ways of combination. upper-roller plate rolling machine