| 摘要 |
The pipe jack includes a square tubular body, and a movable carriage and a hydraulic ram mounted within the body. A cylindrical sleeve for receiving a length of pipe or rod is disposed above the body and is removably mounted on the carriage. A gripper, including a two-piece arcuate clamp and a hydraulic ram, grips the pipe or rod adjacent the sleeve. When the carriage is moved, the sleeve engages the gripper to move the pipe or rod.
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