CORRUGATED BENT SECTION Russian patent published in 1999 - IPC

FIELD: manufacture of cold bent special-designation rolled sections, for example at making suspension metallic frameworks for securing panels of suspension ceilings and frameworks for mounting wall panels. SUBSTANCE: corrugated bent section includes horizontal and vertical walls with lengthwise riffles and bent portions made from thin-sheet zinc plated steel having thickness S and corrugations with height equal to (0.9-1.2)S and with convex portions turned inwards. Vertical walls are shorter than horizontal ones at least by (2.0-2.4)times and they have edges beaded by radius equal to (5.5-6.2)S and triangular cross section corrugations with width equal to (5.6-6.8)S and with pitch equal to (13-15)S. There are two trapezoidal corrugations with width equal to (9-11)S. Said corrugations are spaced from vertical walls by distance equal to (22-24)S and they are separated one from another by triangular cross section corrugation with width equal to (5.6-6.8)S. Distance between said trapezoidal corrugations is equal to (68-74)S. EFFECT: increased rigidity of constructions due to stable close adjoining of panels one to another, enlarged manufacturing possibilities. 6 dwg