... pdc coring bit 1.Type:coring bit,diamond 2.OD:28mm-150mm 3.long useful life, high efficiency, wide using range, PDC ... bit can be divided to core bit, non-coring drilling bit and anchor bit. ... power for drilling. We can provide the matches PDC bit based on different geological conditions and the hardness ... φ89,φ94, φ108, φ115, φ120, φ133, φ146, φ153 pdc coring bit