... rod material in continious, semicontinous roll production line.(2)2hi,4hi of cold and hot boards ... ,rod material in continious, semicontinous roll production line. (2)2-hi, 4-hi and many roller cold ... ,rod material in continious, semicontinous roll production line. (2)3-hi, 6-hi and many roller ... and nonstandard apparatus such as copper, aluminium line material continuous casting and tandem rolling group ...