FIELD: construction engineering. SUBSTANCE: this relates to building structures assembled of hollow tubular members. Unit for end joining of tubular wall members has end connectors, each made in the form of symmetrically bent strip. As to their form, strips have two side parts with shaped sections over their length. Shaped sections directed towards joints have counterpart slots. Extreme shaped sections located in end space of tubular wall member are bent outside and provided with L-shaped stops. Stops are arranged on periphery of extreme shaped sections and they are bent outside for possible interaction of their shelves with end face of tubular wall member made of spirally wound steel strip. Unit is provided with thermal-insulating coating. EFFECT: high efficiency. 2 cl, 11 dwg
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