FIELD: metallurgy.
SUBSTANCE: method involves ingots casting with electroslag remelting, turning them into ingot billets, the central hole drilling in ingot billets, heating, feeding of ingot billets grease to the central hole, ingots piercing in the mill of cross-screw rolling on the mandrel into the cupped blanks, heating of the cupped blanks from a cold charging to a temperature of 1250-1260°C, feeding lubricants into the cupped blanks, piercing-rolling in the mill of cross-screw rolling on the mandrel into the cupped blanks, rolling the cupped blanks on TPU 8-16" with pilger mills into the hot rolled tube stocks, cutting of technological waste - seed ends and pilger heads, straightening in a 6-hi leveler, austenitization, cutting of pipes on two pipes of equal length, mechanical processing-tubes boring and turning into the tube stock workpieces, rolling of them on CRT mill into trade pipes and thermal processing of cold-rolled pipes.
EFFECT: reduced expensive metal consumption, reduced roughness of outer and inner surfaces of pipes, improved productivity and increased lengths of pipes, reduced cost provided by regulation of processing modes and methods at all stages of production.
2 cl, 1 tbl
