kuumvaltsimine - metalli plastsust suurendatakse kuumutades
hot rolling - process of rolling metal to reduce its thickness, carried out above the softening temperature of the metal and, with copper alloys, usually at temperatures from about 1200°F to 1700°F (650°C to 927°C
Production and processing of metals: metal ore roasting or sintering installations, installations for the production of pig iron or steel (primary or secondary fusion) including continuous casting with a capacity exceeding 2.5 Mg/hour, installations for the processing of ferrous metals (hot rolling mills > 20 Mg/hour of crude steel).
