Abstract: The research covers the main aspects of the cross-rolling/elongating process with conical rolls, guide shoes and cylindrical mandrel, including additional deformation, slipping and lead. A comparison of the process with the Mannesmann 2-high cross-rolling/elongating processns made. The research result shows that the conical roll provides considerable advantages from the point views of deformation and kinematics, such as less additional deformation, less deformational work consumed and better product quality.