DEFORMABLE SHEET CONSTRUCTION MATERIAL Russian patent published in 1999 - IPC

FIELD: rolled stock production, namely metallic constructions in building, machine engineering and other industry branches. SUBSTANCE: deformable sheet construction material has cross section including boundaries of front and back surfaces. At least in boundary of front and(or) back surface and(or) at least in one apex of cross section, a part of line of cross section boundary is in the form of fragment and(or) combination of fragments of oblique cone section of straight circular cone. It provides thickness change of sheet deformable construction material at shaping operations. EFFECT: enhanced technological effectiveness, reduced material consumption of articles made of such sheet construction material. 21 cl, 18 dwg