DEVELOPMENT OF LARGE DIAMETER THICK-WALLED SEAMLESS PIPES FROM STEEL EP823-SH PRODUCTION TECHNOLOGY
The production technology of large diameter thick-walled seamless pipes is described. Making possibility thick-walled seamless pipes from a continuous ingot of electroslag remelting through its piercing and subsequent hot and cold rolling is shown. For the first time in Russia, a pilot batch of thick-walled seamless pipes of ferritic-martensitic grade 16Ch12MVSFBR-Sh (EP823-Sh) with a diameter of 182x42 mm and a diameter 210x37 mm was made.