Державний Науково-Дослідний І Конструкторсько-Технологічний Інститут Трубної Промисловості (Вhіті)
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Publication of UA9331A1publicationCriticalpatent/UA9331A1/en
A method for manufacture of pipes of large diameter includes producing a hollow billet and its subsequent hot deformation. For the purpose of extension of manufacturing capability, the hollow billet is produced from continuously cast slab by its molding into the cylinder and subsequent welding. Molding is carried out at a temperature not below 0.3 Тпл, and hot deformation of billet is performed with ratio B/L not more than 0.5, where Тпл - melting point of the material of billet, B- width of the slab, which forms the length of the billet prior to hot deformation, L - length of pipe after hot deformation.
UA4105096A1986-07-251986-07-25method for manufacture of pipes of large diameter
UA9331A1
(en)