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St 450 Pneumatic Drilling Rig Durable Dth Rock Blasting Deep Water Borehole
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ST 180 Water Borehole Pneumatic Drilling Rig For Deep Underground Industrial Drilling
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Versatile Pneumatic Drill Rigs With 3m Drilling Rod Length
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Climbing Speed 20m/Min Pneumatic Drill Rig Working Wind Pressure 1.25-3.5 Mpa
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180m Deep St180 Pneumatic Drilling Rig Crawler Type Small Hydraulic For Water Well
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Water Well Borehole Pneumatic Drilling Rig 350M Portable
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