| 摘要 |
As a corrosion protection device for fastening parts, arranged below the road or ground surface, for rib plates and the grooved rails arranged on these, use is made of a covering hood which in each case covers a hook bolt, which serves to fasten the grooved rail on the rib plate, and its nut, as well as the adjacent sleeper screws which serve to fasten the rib plate on a sleeper or other base. <IMAGE>
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