FIELD: metallurgy.
SUBSTANCE: invention relates to a method of producing seamless pipes of 426×14-16 mm for nuclear power facilities of steel grade "08Х18Н10-Ш". The method includes casting of hollow ingots with electroslag remelting of 670×in.280×2100±50 mm, boring and turning them into hollow cakes with 650×in.300×2100±50 mm, heating ingot-blanks in the process furnace to a temperature of 1250-1260°C, the issuance of ingot-blanks from the furnace, lubrication from two ends of ingot-blanks with a mixture of graphite and common salt in a ratio of 50/50 mass equal to 1000-1250 g, piercing-rolling of ingot-blanks in the mill of cross-screw rolling into sleeves of size 660×in.455×2930-3070 mm, rolling of bushings on PPP 8-16" with pilgrim mills into hot-rolled pipes of 490×38×7800-8200 mm, cutting of technological waste - seeding ends and pilgrim heads with a hot cutting saw, straightening in a six-high straight machine, austenization, cutting pipes into two pipes of equal length, machining-boring and turning into billets of 474×19×3900-4100 mm, rolling mechanically processed billets at the CPT 450 mill into commodity pipes along the routes: 474×19×3900-4100 - 426×14×5600-5900, 474×19×3900-4100 - 426×15×5200-5500 and 474×19×3900-4100 - 426×16×4900-5200 mm and heat treatment of cold-rolled pipes.
EFFECT: reduced metal consumption.
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