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KNSH 41-25.7.BSr MX Core Bit for Versatile Drilling
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 from 33 to 43 mm 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 underground drilling operations. for drilling operations underground at compressed air pressure of 0.5...0.7 MPa.
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