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KNSH-115 DHD340 Drill Bit Crown for Various Geological Applications
Manufacturer:
Machine-Building Holding OJSC
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Description
Drill bits are designed for percussive rotary drilling of wells of various purposes with diameter in rocks and ores with coefficient of hardness f=6...5 MPa. f=6...20 on the scale of Professor Protodyakonov (GOST 21153.1-76) and can be used for drilling operations open on drilling machines at compressed air pressure of 2.0...2.5 MPa.
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