| 摘要 |
Stairway for use on a semi tractor trailer or similar trailer. The stairway includes stairs mounted on an outer pipe and the outer pipe is rotatably mounted over an inner pipe. The inner pipe is pinned to a trailer bed in a stake pocket. The outer pipe can be rotated between a first position where the steps are deployed for use and a second position where the steps are locked under the bed of the trailer.
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