FIELD: plastic working of metals. SUBSTANCE: method involves usage of continuously cast ingot as basic billet for stitching, with ingot core having lower deformation resistance as compared to peripheral portions; combining ingot stitching and radial forging processes, with total deformation extent being within the range of 25-50% Stitching is conducted at temperature gradient not exceeding 500 C through ingot central and outer surfaces. EFFECT: increased efficiency and improved quality of tubes. 2 cl
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