CHANGES IN MECHANICAL PROPERTIES OF SHEET METAL IN THE MANUFACTURING PROCESS OF LARGE DIAMETER PIPES FOR OIL PIPELINES

NESTEROV Grigory V., Ph. D. in Eng., Leading Researcher of the Laboratory of the Pipes and Fittings, The Pipeline Transport Institute, LLC, Moscow, Russia, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

GAVRILOV Dmitry A., Ph. D. in Chem., Senior Researcher of the Laboratory of Pipes and Fittings, The Pipeline Transport Institute, LLC, Moscow, Russia, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

POSHIBAEV Pavel V., Head of the Laboratory of Pipes and Fittings, The Pipeline Transport Institute, LLC, Moscow, Russia, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

AZARIN Alexander I., Senior Researcher of the Laboratory of Pipes and Fittings, The Pipeline Transport Institute, LLC, Moscow, Russia, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

Electric-welded pipes with diameters from 530 to 1220 mm, intended for construction, repair and reconstruction of oil trunk pipelines, are manufactured using different technologies of forming a pipe billet. To assess the influence of the cold deformation of metal that occurs when the different forming methods of pipe billet are used on a changing of the original mechanical properties of metal of strength grade К56, experimental research was performed. The results of these experimental research are presented in the paper.

sheet metal, pipe billet, forming, pipe forming

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