There are various methods of forming steel into finished products, including ca hot forging , hot and cold rolling, seamless tube making and welded tube making. The most widely used process is hot rolling, which accounts for over 90% of all steel production.
Rolling is a forming process, which causes permanent change of shape (set) by plastic deformation of the material as it passes between sets of steel rolls.Sets of cylindrical rolls reduce the cross-sectional thickness of the metal whilst simultaneously causing it to become elongated. Other rolling processes are employed to change the cross-sectional shape of the metal using shaped rolls while other methods form the metal into a specific shape for a particular purpose.
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