The present invention has the casting thickness of the strip less than 10 mm after the roll casting process, the thin metal strips, in particular hot-rolling a steel strip directly from the metal melt, to a method for continuous production. Metal cast strip is in-line and fed to the thickness reduction, is supplied to the subsequent storage device. The invention object is a hot-metal strip, continuous that the rolling-and the cast thin slab or cast thickness can be achieved by the production of metal strip from a slab of 40 to 300 mm, which high-quality hot-rolling is also related to the tolerance flat It has a thin strip casting process to achieve a thickness which can be produced directly from the metal melt continuously. After all, the measurement of the flatness are executed on the metal strip being moved, these measurement results of the planarity is obtained in order to affect the flatness of the metal strip.