| 摘要 |
<p>The grill metal sheet structure (2) comprises several cross-section roof-shaped grill portions (4) that are arranged adjacent to each other. The grill portions are provided with running side walls (6) along a longitudinal direction. One of the side walls are formed in reversed U or V-shape. A support surface (8) in the side walls is extended from the side walls along longitudinal direction of the grill portion. The width of the support surface is set between 25% and 200% of a middle sheet thickness of the side walls.</p> |
