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PDC Anchor Bolt Coal Mining Drill Bits

What is the Detail of PDC Anchor Bolt Coal Mining Drill Bits? 1) Adopt new superhard materials, cutting bit long service life. 2) Can greatly improved drilling efficiency of in medium hard rock and harder medium. 3) The blade is durable, do not need to grinding, easy to use. 4) It reduces the labor intensity of workers. It’s suitable in 4 to 12 class rock stratum.

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