Device for producing a cylindrical container with a large diameter, in particular a silo, from a sheet-metal strip which is wound up on a reel and is subsequently bent helically, with - a profiling device which can be erected on the ground with profiling stations, the profiling device having a path which is formed in the manner corresponding to the wall bend of the cylindrical container and runs in an offset manner and to which the sheet-metal strip is supplied and which forms a protruding flange on the upper border region of the supplied sheet-metal strip, - a rotary drive device which can be erected on the ground with rotary drive stations, - a welding device which is arranged directly downstream of or on the rotary drive device for welding an adjacent upper border region to a lower border region (24, 22) of the associated lower and upper sheet-metal strip (20.1, 20.2), - an annular mounting frame which can be erected on the ground and, at a distance from its lower end, comprising supporting rollers, which are spaced apart in the circumferential direction along a helical line, on supports for supporting the container on the protruding flange, wherein the path of the profiling device runs next to the path of the helical line determined by the supporting rollers, and wherein the arrangement of the rotary drive device with its rotary stations and the welding device coincides with the helical-line-shaped path determined by the supporting rollers, - characterized in that - in the region of the rotary drive device and/or welding device there are means for adjusting the vertical position of an upper sheet-metal strip (20.2), which is supplied above the to the rotary drive device and welding device, with respect to the vertical position of the lower sheet-metal strip (20.1), which runs therebelow and is supplied with the upper border region, for welding the lower sheet-metal strip (20.1) and the lower border region of the upper sheet-metal strip (20.2) such that the border regions (22, 24) can be arranged from spaced apart to overlapping, and - the means for adjusting the vertical position have at least one guide roller which is present in a supporting manner below the protruding flange of the upper sheet-metal strip (20.2). - a profiling device which can be erected on the ground with profiling stations, the profiling device having a path which is formed in the manner corresponding to the wall bend of the cylindrical container and runs in an offset manner and to which the sheet-metal strip is supplied and which forms a protruding flange on the upper border region of the supplied sheet-metal strip, - a rotary drive device which can be erected on the ground with rotary drive stations, - a welding device which is arranged directly downstream of or on the rotary drive device for welding an adjacent upper border region to a lower border region (24, 22) of the associated lower and upper sheet-metal strip (20.1, 20.2), - an annular mounting frame which can be erected on the ground and, at a distance from its lower end, comprising supporting rollers, which are spaced apart in the circumferential direction along a helical line, on supports for supporting the container on the protruding flange, wherein the path of the profiling device runs next to the path of the helical line determined by the supporting rollers, and wherein the arrangement of the rotary drive device with its rotary stations and the welding device coincides with the helical-line-shaped path determined by the supporting rollers, - characterized in that - in the region of the rotary drive device and/or welding device there are means for adjusting the vertical position of an upper sheet-metal strip (20.2), which is supplied above the to the rotary drive device and welding device, with respect to the vertical position of the lower sheet-metal strip (20.1), which runs therebelow and is supplied with the upper border region, for welding the lower sheet-metal strip (20.1) and the lower border region of the upper sheet-metal strip (20.2) such that the border regions (22, 24) can be arranged from spaced apart to overlapping, and - the means for adjusting the vertical position have at least one guide roller which is present in a supporting manner below the protruding flange of the upper sheet-metal strip (20.2).