In this thesis, a production process for thick-walled tubes made of the alloy Ta2.5W was investigated. According to the state of the art, high-pressure tubes made of this alloy are manufactured using the hollow drawing process, which is challenging in terms of dimensional accuracy and achievable surface qualities. To analyze this process, the multi-stage process was set up using the finite element method. For the material model, compression tests at room temperature and strain rates between 0.005/s and 5/s were carried out. It was observed that the flow curves flattened considerably at higher strain rates, which was attributed to thermal effects. Therefore, the temperature increase during the compression test was also taken into account for the parameter determination and a good fit for the Zerilli-Armstrong model was achieved. The simulation of the process showed that the wall thickness decreases significantly more than observed in the real process. Subsequently, three differently pretreated tube variants were examined to investigate the influence of the initial roughness on the surface roughness after the process. It was found that all of the tube variants investigated produced a highly deformed and roughened inner surface consisting of extrusions of individual grains and overfolds of grains. These defects were examined more closely on one tube variant. However, these defects are not cracks, but surface defects caused by the pre-tube production, which are pushed together in the circumferential direction during the process.