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This page was printed from www.nzsteel.co.nz on 9 Mar 2014
To achieve the significant reductions required when converting the cast steel slabs to coil and plate, the steel must be rolled while hot. The slabs are heated in a natural gas fired furnace before processing on the hot rolling mill.
The heated slabs are 210 mm thick when entering the mill, after hot rolling, the hot rolled steel is now between 2 and 15 mm thick. On cooling the steel coil can be sold as is or cut to length (plate) or further processed through the cold rolling mills.
Hot rolled steel is produced in a number of grades each designed to be used in a range applications, welded steel structural beams, storage tanks, flanges, welded pipe where strength is required.