This paper discuss about influence of reduction size on mechanical properties of pipes and surface roughness. The aim of this experiment is to verify the option of pulling rolled pipe (material E355) size ∅ 70 x 6,3 mm without intermediate recrystallising annealing has final size ∅ 45 x 3,75 mm looking at its mechanical features which determination is based on basic pulling test and from the point of view of roughness of inner surface of pipes.