Rolling mill comprising: - a rolling-mill stand containing a plurality of cylinders, including two working cylinders and two pairs of cylinders referred to as intermediate cylinders, arranged together in order to support said two working cylinders in the direction of rolling, - a main gate on the front face of the rolling mill for accessing all the cylinders and having an opening, and - a device for lateral movement of the intermediate cylinders, of the push-push type, comprising a first pair of two hydraulic actuators (22, 22') positioned at the bottom of the rolling-mill stand and a second pair of two hydraulic actuators (21, 21') positioned on the front face of the rolling-mill stand, each of the hydraulic actuators (21, 21', 22, 22') having a portion (21a, 21a', 22a, 22a') in abutment on one of the ends (13a, 13b) of the intermediate cylinders and being configured so as to exert a thrust force to allow a lateral movement of the intermediate cylinders, characterised in that it comprises a removable small gate able to have at least: a) a closed position in which the small gate closes the opening formed in the main gate and serves as a lateral stop for the working cylinders and optionally the intermediate cylinders, and b) an open position affording access to the two working cylinders and optionally to the intermediate cylinders, and in that said small gate integrates the second pair of hydraulic actuators (21, 21'). and in that: - according to a first possibility, comprises fixing means configured so as to securely connect the small gate to the main gate in the closed position or alternatively. the small gate comprises fixing means fixed to the rolling-mill stand and configured so as to securely connect the small gate to the rolling-mill stand in the closed position and wherein the fixing means (41, 41') are configured so that the small gate is able to be disconnected from the main gate, and in that the rolling mill comprises a carriage positioned close to the small gate and having rails on which, when the small gate is disconnected from the main gate, said small gate is able to translate as far as a stop in order to reach the open position and allow access to the working cylinders and optionally the intermediate cylinders, - according to a second possibility, the small gate comprises fixing means configured so as to securely connect the small gate to the main gate in the closed position and wherein the fixing means comprise retraction means, consisting of a hinge system, fixed to the main gate, projecting from said main gate and opposite to the retraction means of this said main gate, also consisting of a hinge system. - a rolling-mill stand containing a plurality of cylinders, including two working cylinders and two pairs of cylinders referred to as intermediate cylinders, arranged together in order to support said two working cylinders in the direction of rolling, - a main gate on the front face of the rolling mill for accessing all the cylinders and having an opening, and - a device for lateral movement of the intermediate cylinders, of the push-push type, comprising a first pair of two hydraulic actuators (22, 22') positioned at the bottom of the rolling-mill stand and a second pair of two hydraulic actuators (21, 21') positioned on the front face of the rolling-mill stand, each of the hydraulic actuators (21, 21', 22, 22') having a portion (21a, 21a', 22a, 22a') in abutment on one of the ends (13a, 13b) of the intermediate cylinders and being configured so as to exert a thrust force to allow a lateral movement of the intermediate cylinders, a) a closed position in which the small gate closes the opening formed in the main gate and serves as a lateral stop for the working cylinders and optionally the intermediate cylinders, and b) an open position affording access to the two working cylinders and optionally to the intermediate cylinders, and in that said small gate integrates the second pair of hydraulic actuators (21, 21'). - according to a first possibility, comprises fixing means configured so as to securely connect the small gate to the main gate in the closed position or alternatively. the small gate comprises fixing means fixed to the rolling-mill stand and configured so as to securely connect the small gate to the rolling-mill stand in the closed position and wherein the fixing means (41, 41') are configured so that the small gate is able to be disconnected from the main gate, and in that the rolling mill comprises a carriage positioned close to the small gate and having rails on which, when the small gate is disconnected from the main gate, said small gate is able to translate as far as a stop in order to reach the open position and allow access to the working cylinders and optionally the intermediate cylinders, - according to a second possibility, the small gate comprises fixing means configured so as to securely connect the small gate to the main gate in the closed position and wherein the fixing means comprise retraction means, consisting of a hinge system, fixed to the main gate, projecting from said main gate and opposite to the retraction means of this said main gate, also consisting of a hinge system.