| 摘要 |
-shaped profile made of a constructional sheet. It presents an interconnecting surface 2 squared off with two flanges 5,6 whose free ends are also squared off with the terminal flanges 7,8. At one of the two ends of the interconnecting surface 2, there is a distal stripe 2a, which is inwardly displaced in relationship to the one dimension of the sheet thickness. Two united C-shaped sections form a profiled case having step-free planar outer surfaces. |
