cavity in the upper tool part or in the lower tool part respectively the compression apparatus 130 comprises a piston and cylinder drive 131 and a device 132 for sealing the front end of the hollow member 140 to be shaped the compression apparatus 130 further comprises a gas inlet 135 for applying an internal pressure onto the hollow member 140 compression for feeding material into the shaping cavity occurs in the direction pursuant to the arrows 136 the piston rod of the piston and cylinder arrangement 131 is carried on an adjustable holding means 138 on the base plate 101 of the tool the important point hereby is that the hydraulic system in form of the tool closing cylinder is arranged in the region of the lower part of the tool in order to prevent hydraulic liquid from penetrating the cavity in the case of leakage this on the one side results in reduced fire risk but also prevents hydraulic liquid from penetrating the cavity which may also lead to a change in the friction rates at the respective end of the shaping tool there is provided a cooling apparatus for preventing the hollow member from expanding during shaping as can be seen from fig6 b the tool for shaping the hollow member is part of a complete system comprising a pre heating station 200 and a cooling station 300 mounted downstream of the shaping tool the work cycle of the pre heating station 200 in which the hollow member to be shaped is inductively heated is synchronized with the time the hollow.