| 摘要 |
<p>A section predisposed for being bent along at least one transverse bending line of its plane base side (10). With a view to rendering possible the fabrication of frames and framed structures with the use of few and non-specific jointing means, for every bending line there is provided a V-notch that extends across the entire width of the section and terminates with its vertex in the base side (10), forming therein a substantially square groove with one sharp angle (32) and one rounded angle (33). Also described is a frame made from just a single piece of section predisposed in this manner and bent into right-angle bend along four bending lines, wherein the two ends of the section are butt-joined by means of a screw. <IMAGE> <IMAGE></p> |
