METHOD OF PRODUCING COLD-DEFORMED COUPLING PIPES OF 88,9 ×6,45 mm SIZE FROM CORROSION-RESISTANT ALLOY OF 'ХН30МДБ-Ш' GRADE

摘要

FIELD: metallurgy.;SUBSTANCE: pipes are made from centrifugally cast tubular workpieces of regulated size, which are bored and ground into hollow machined workpieces, heated and rolled on a Pilger mill into rerolled hot-rolled pipes, and then rolled on KhPT mills in trade pipes.;EFFECT: reduction in the products cost is ensured by the choice of the original workpiece and its regulatory processing mides in all industries.;2 cl, 1 tbl