... machine,(1)100,000-500,000ton wire,bar,rod material in continious, semicontinous roll production line.(2)2hi,4hi of cold and ... in the unit apparatus of steel rolling: (1)100,000-600,000ton wire,bar,rod material in continious, semicontinous roll production line. (2 ... in the unit apparatus of steel rolling: (1)100,000-600,000ton wire,bar,rod material in continious, semicontinous roll production line. (2 ...