The invention relates to an apparatus for producing corrugated cardboard products. Said apparatus comprises a first one-sided machine and a second one-sided machine which are configured in each case for producing a single flute corrugated cardboard web. Furthermore, the apparatus has a combining means which is configured for connecting the single flute corrugated cardboard webs. Here, the combining means is provided with a convergence region which is configured for mutual adaptation of the single flute corrugated cardboard webs. Furthermore, the invention relates to a method for producing corrugated cardboard products, in which method a first single flute corrugated cardboard web is connected to a second single flute corrugated cardboard web. During connection, a first single flute corrugated cardboard web and a second single flute corrugated cardboard web run through a convergence region.