| 摘要 |
The roof or facing cladding as a rhombic form shingle has edge strips(13,14) on its four longitudinal sides, of which those lying above a center transverse plane in the installed position are beaded by 180 degrees forward to form a fold(24), and those lying below this center transverse plane are beaded rearwards towards a support face(1) on the roof or facing, similarly forming a fold. The lower peripheral section of the shingle bridging the center transverse plane is convexly rounded between the adjacent end sides of the edge strips beaded rearwards towards the support face. |
