The invention relates to a device for manufacturing tubes from prefabricated pipe bodies by pressing a heated plastic blank (24) to form a tube head which is connected to the tube pipe (13) at the same time. The device has a step-by-step transport means which is stopped at equidisdant working stations (II-VIII). The transport means has entrained mandrels (7) for receiving the pipe body (13) and entrained matrices (5), which may have punching dies (21''), arranged on the same axis as the mandrels (7). The mandrels (7) can be moved axially and co-operate with a press (8) in such a manner that they can be introduced into the matrices (5) in order to press the tube head. The device also has a loading and unloading station (I, VIII), an extruder (12) and a metering device (11). According to the invention, the mandrels (7) are also arranged so that they can move out of the position equiaxial to the matrices (5) into positions parallel thereto. Preferably, the mandrels (7) can be moved on at least one inner and/or one outer orbit (A, C) located outside the transport means and parallel to the orbit (B) of the matrices (5).