| 摘要 |
Grating. It comprises a plate forming a grating 1, extended by two uprights 3 terminated by lips 5. The plate 1 is provided with oblong lozenge-shaped holes 6 and with flanges pointing downwards, as well as non-slip holes 8 with flanges pointing upwards. The whole of the grating is formed from a strip of sheet metal. Application to public works (civil engineering). <IMAGE>
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