Multi-stand rolling mill for rod-shaped bodies comprising three motorized-rollers stands

A rolling mill for tubular bodies comprising a first section for rolling on mandrel defined by a first plurality of rolling stands arranged in sequence along a rolling axis, characterized in that it comprises a second section for extracting said mandrel and calibrating the diameter of said tubular bodies, said second section being downstream of said first section, whereby said tubular bodies exiting from said first section directly enter said second section, said second section comprising a second plurality of rolling stands without mandrel, arranged in sequence along said rolling axis, wherein each stand of said second section comprises three rollers, the rotation axes of which are arranged at 120° relative to one another and wherein, for each stand, said rotation axes are rotated by 180° relative to corresponding rotation axes of an adjacent stand, said position of said rotation axes being assessed with respect to a vertical reference direction, and wherein at least one stand of said second section comprises a motorized roller having a vertical rotation axis.