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coal mining drill bit PDC bit uses PDC as main cutting components, with the excellent wear-ability and impact toughness of the PDC, it has a useful life, high-efficiency, and good performance cost ratio. PDC bit is mainly used for drilling soft and medium formation, it work under drilling pressure, medium-low speed, big drainage situation. Zhejiang knick electromechanical co., ltd can supply all kinds of PDC drill bits such as: coring bit, coreless bit, PDC anchor drill bit, PDC sintering matrix bits and PDC anchoring bits. PDC bit can be widely used in the field of geological exploration, coal mining, water conservancy and hydropower, constriction and railway.