FIELD: plastic metal working, possibly manufacture of cold deformed tubes, mainly electrically welded tubes having improved geometry accuracy. SUBSTANCE: method for making cold deformed welded tubes, mainly precision tubes comprises steps of shaping and welding blank, cold drawing of it, heat treating and straightening tube. Before straightening tube is expanded on mandrel by its inner diameter with deformation value (0.2-1.0) %. Method provides manufacture of straight tubes with high quality and accuracy of inner surface. EFFECT: stabilized straightening process, manufacture of tubes with high accuracy of geometry and enhanced quality of inner surface.
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