#### Understanding Rolling Process in Long Product .

If a mill rolls 800,000 tons per year using billets of 1.25 ton weight, it rolls 640,000 billets per year. That is 639,999 billet gaps. If the average billet gap is 5 seconds that is (5 sec x 639,999)/3600 sec/hour = 888.89 hours of billet gap. If the average billet gap is reduced by 0.5 second that would be (4.5 sec x 639,999)/3600 sec/hour = 800 hours of billet gap, creating an additional 88 ...

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