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Water cooling system for control and improve the quality of Steel Bar.
Target:
Use Soft steel Q235 to produce HRB335
Use 20MnSi to produce HRB400 ,English standard BS4449-1997,460Mp, Americal ASTMA615/A615M-96a,420 .
Patent No. of Hot rolling , Refine rolling and Countinues Rolling : patent no 200720066373.4
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