FIELD: plastic metal working. SUBSTANCE: method comprises steps of rolling tubular thin-wall blank between non-driven rolls for forming twinned stepped blank with cross section area lowered from its ends towards central portion; before final pass of each step changing rolls for mounting rolls with changed grooved pass; changing value of tension effort applied to one end of blank at each rolling pass in dependence upon its cross section area in current pass; at terminating rolling process separating blank by two parts. EFFECT: possibility for making elongated non- rigid thin-wall tubular products with cross section variable along their lengths due to providing accurate diameter of blank in each pass. 6 dwg, 1 tbl
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