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The cold rolled steel coil china by hot rolling through continuous cold deformation, the mechanical performance is relatively poor, too high hardness, must be annealed to restore its mechanical performance, without annealing is called rolling hard.
The heating hood is positioned and the cold rolled steel coils are placed one above the other. The interior cover is placed on top of the steel. The heat from the burner is circulated to the surface of the steel. The steel coils remain soaked in this temperature. Then the cooled hood is
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The high quality cold rolled steel coil china is usually done by longitudinal rolling. The process of cold rolling generally includes material preparation, pickling, rolling, degreasing, annealing (heat treatment), finishing, etc. In order to guarantee the surface of cold rolling products,
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