FIELD: construction.
SUBSTANCE: invention relates to the field of construction, namely to the double-tee twisted part, which can be used as beams and beam systems. In double-tee twisted-welded profile made of single sheet workpiece, belts of which are bent in form of triangular shape with right angle between inclined faces and closed by two welded seams, each of inclined faces in cross section has shape of half of round semi-ring with radius equal to height of belts and twice shorter than their width. H-glossary closed profile can also be made with double wall and one welded seam.
EFFECT: technical result consists in reduction of stress concentration and cold work hardening of main metal in zones of suturing of bent section, reduction of material consumption.
1 cl, 4 dwg
