DTH hammer bitAccording to the different geological conditions and rock-hardness of the customers to produce the flat, convex and concave bits. According to the d
PDC non-coring bitPDC bit can be divided to core bit, comprehensive drilling bit and sintering matrix bit. This kind bit has the advantages of long useful life, high e
PDC coal mining pick bitIntroductionHunan Feiray has developed a new kind of PDC pick, and it has got several patents. The tip of this kind of pick uses PDC insert instead o
PDC spherical insertsIntroduction We are the first manufacturer of special-shaped diamond enhanced insert in China,can made by your different requirements. The manufactur
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