... continious, semicontinous roll production line. (2)2-hi, 4-hi and many roller cold and hot board rolling mill, aluminium ... in continious, semicontinous roll production line. (2)3-hi, 6-hi and many roller cold , hot board rolling mill, aluminium cast ... , ideformed steel , copper , aluminium product , aluminium sheet , steel window and other steels that were used and scrap. hot rolling production line