... -500,000ton wire,bar,rod material in continious, semicontinous roll production line.(2)2hi,4hi of cold and hot boards rolling mill ... -600,000ton wire,bar,rod material in continious, semicontinous roll production line. (2)3-hi, 6-hi and many roller cold , hot ... and tandem rolling group.5.Small-scale rolling mill:The one utilizes small-scale rolling apparatus (this technical design thesis has ...