Abstract: In a rolling-mill installation for the continuous production of fine steel includes a roughing block, a finishing block arranged on the rolling line of and after the roughing block, a water cooling section arranged after the finishing block and on the rolling line and a laying unit arranged downstream. In order optionally to be able to carry out rolling processes in accordance with conventional rolling or thermomechanical rolling, the finishing block arranged on the rolling line of the roughing block can be moved into a rolling position at a distance from the rolling line of the roughing block and back again. A rolled-material diverter is arranged downstream of the water cooling section by which the rolled material can optionally be routed on the one hand to a laying unit and on the other hand, via a soaking section, to the finishing block which has been moved at a distance from the rolling line of the roughing block.