This document is applicable for steel cast slabs for pipe production manufactured in continuous casting process. These steels have a typical chemical composition as follows (mass percentages): C ≤ 0,12 % Mn ≤ 2,0 % Si ≤ 0,5 % Ti + Nb + V ≤ 0,2 % The common dimensions of these slabs are in the following ranges: Slab width: 800 mm to 2 600 mm Slab thickness: 150 mm to 450 mm