FIELD: metallurgy.
SUBSTANCE: method involves casting of hollow ingots of regulated size by electroslag remelting, thier boring and turning into ingots-billets, heating, rolling at Pilger mill on taper mandrels to re-rolled hot-rolled pipes, segmentation of technological waste, straightening in a six-roll straightening machine with rolling heating temperature, austenitizing, cutting to two pipes of equal length, machining to pipe billets and rolling of machined pipe billets at CRM mill into commercial pipes along regulated routes with following heat treatment.
EFFECT: reduced expensive metal consumption, reduced roughness of outer and inner pipe surfaces, increased productivity.
2 cl, 1 tbl
