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The experimental data on the end thickness variation of tubes produced by PRP-80 of “Sinarsky Pipe Plant” was analyzed. The data of length of thickened ends of rough and finished tubes are shown. The configuration of thickened ends was displayed as conical shape with rectilinear generators, and the linear regression equations were obtained. The formula for calculating of the length of front and back thickened ends was also determined. The data of thickness variation of rough and finished tubes are shown.

ANALYSIS OF THE END WALL THICKNESS VARIATION OF TUBES AFTER REDUCING MILL