... is widely used to steel plate pre-bending, complete bending, and rough straightening performance.The upper roll ... down, their accuracy is max +/-0.2mmPr-bending operationThe lower roll is up and clamps the ... machine can be pre-bend operation and complete bending operation. It is no need to use other ... rolling machine, plate roll bender, plate bending roll, CNC 4 roller machine, CNC 4 rolling machine