Thickness control system for rolling mill

A rolling mill during rolling thickness control system, which can be set mill having a hydraulic roll gap between the upper and lower work rolls of the roll gap control means, and a is detected by the load cell based on the reference rolling pressure any difference between the actual rolling pressure to the control means outputs a command signal to the hydraulic roll-gap mill modulus control means, the tension control device is provided on the input side of the rolling mill or the input and output sides, in order to suppress rapid changes roll the gap caused by tension fluctuation.