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Surface Mounted Diamond Drill Bits: work efficiency. According to the different hardness of rock layers, the matrix hardness is divided into heights of 30 ° -40 °, conventional depths of 15 ° -25 °, and low depths of 5 ° -15 °, which ...

Permeability Rock Geotechnical Lugeon Test Equipment: tightened, the packers are inflated and water is then pumped through the tighthead down the rods, through the packers and into the formation. ModelOD (mm)Expansion of scope (mm)Hole dia. (mm)Working ...

Coal Seam Gas Drainage and Sealing Device: workers' operation conditions greatly and prevent the dust explosion accident effectively. · The water can humidify the coal bed, which can prevent the auto-ignition of the coal. · It has good ...

Water Injection Hole Packer: workers' operation conditions greatly and prevent the dust explosion accident effectively. · The water can humidify the coal bed, which can prevent the auto-ignition of the coal. · The water is ...

Cement Grouting Packer: Product Description I. PRODUCTION INTRODUCTOIN Adapted to a wide range of B, N, H, P drilling hole diameters and other hole dia. can be customized. The packers are highly flexible and can ...

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Surface Mounted Diamond Drill Bits