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Jinghe Factory 260m Portable Crawler Hydraulic Air Drill Rig for Water Well. JHS-260 Series is a full hydraulic rotary water well drilling rig with easy operation, flexible control, and strong mobility, saving time and labor. new variable-angle mechanism allows easier hole positioning and wider adjustment range. Optional special pipe drilling tools improve drilling efficiency and hole quality. Modular design supports crawler or wheeled movement for different working conditions.