FIELD: manufacture of structural members. SUBSTANCE: method of manufacture of structural member having intermediate connector and closed hollow flanges, outer diameter of one of flanges being less than inner diameter of the other flange, includes, first, closing of flanges and welding with high-frequency induction welding or resistance welding of flange edges to connector, and then, forming of slotted hole in flange of large diameter to ensure telescopic coupling of member edges with adjacent structural member. EFFECT: higher efficiency. 8 cl, 35 dwg
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