W.T.RANGE AND HELICAL I.D,DEFECT OCCURRING DURING PIERCING/ROLLING COURSE WITH THREE-HIGH ROTARY PIPE MILL
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Abstract
Based on a description of shell W.T,range and I.D.helical defect occurring with the threehigh mill piercing operation with related data,a preliminary investigation on how the threehigh pipe rolling mill causes the said two problems is made.
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