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Products > roller. > H&D Machine Co., Ltd. | Similar Products

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HD-20b Man Portable Drilling Rig: roller chain. 3. The drilling rig equipped with safety and warning mark, meets the requirement of H.S.E. and improves the level of security of the rig effectively and reduces the frequency of ...

HD-40 Man Portable Drilling Rig: roller chain. 4. Drilling rig equipped with hydraulic balance valve and reducing valve to assure drilling tools hoisting and pull down steadily with load. Improves reliability and safety of ...

Seismic Shot Hole Drilling Rig: welded with slide plate. 2. Pull up & down of drilling tools is achieved by hydraulic motor driving roller chain. 3. The drilling rig equipped with safety and warning mark, meets the requirement of ...

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