Development of Rolled Product Manufacturing Technology for Pipes with High Deformation Capacity

The problem of achieving a higher level of ductility of pipe steels of strength grades K60 (X70) and K65 (X80) is described. Results of laboratory and industrial experiments are shown, and requirements for pipe microstructure with improved deformation capacity are formulated. Technology is described providing the specified type of structure and steel target mechanical properties, and different production schemes for LTCC are applied making it possible to achieve the prescribed strength and ductility properties over a wide variation range. Results are provided for mass industrial production of rolled product and pipe with high deformation capacity.