| 摘要 |
FIELD: construction, particularly beams of load-bearing suspended ceiling grid provided with plasterboards. ^ SUBSTANCE: reverse profile T-beam for suspended ceiling has boss arranged in upper part thereof and double wall extending from the boss in downward direction. Flanges are arranged from opposite sides of the wall. Each flange has edge bent along the whole flange length. The bent is defined by flat outer part bent downwards and inwards and pressed to flange and by depressions made in lower flange surfaces. ^ EFFECT: decreased metal consumption for beam production. ^ 3 cl, 10 dwg |
