Method and device for reshaping tubes

An apparatus for reshaping an initial tube having an initial outside diameter, an initial wall thickness, and an initial length to form a finished tube having a final outside diameter, a final length, and a final wall thickness, wherein at least one of said final outside diameter, the final length, and the final wall thickness is different than a respective one of the initial outside diameter, the initial wall thickness, and the initial length, the apparatus comprising:

• two axially aligned pressure rams having respective flat end surfaces for contacting the ends of the tube, at least one of the rams being supported so that it can be axially displaced relative to the other ram and can be moved in a continuously variable way by a displacement drive;
• a pressure generating unit for building up hydraulic pressure in a tube mounted between the flat end surfaces of the rams;
• and
• a control unit which can independently and simultaneously adjust the axial displacement of the pressure rams, the pressure which the rams exert on a tube mounted between the rams, and the hydraulic pressure in the tube.