| 摘要 |
FIELD: technological processes. ^ SUBSTANCE: shaped channel-type profile includes wall with reinforcing elements and two parallel shelves conjugated to it perpendicularly. In each profile cross-section loose end of each shelf features a lug at inner shelf facet, with two close slits with C-shaped and ""-shaped internal surface, their symmetry axes parallel to each other and profile wall. Same-type opposite slits face each other with open side, and a lug with groove is also made in connection points of each shelf facet with inner wall facet. The groove runs along long facet of the lug, parallel to wall facet, and features C-shaped inner profile in cross-section. Reinforcement elements are positioned on outer wall facet and have form of several ridges perpendicular to the wall. ^ EFFECT: extended functional capacities. ^ 1 dwg, 2 cl |
