... 517, 537, 617, 637,737,827 TypeTri-cone bits, Steel tooth bits, PDC bits Applicablewater well, oil field, construction, geothermal, directional boring ... transportation.Huanyu specializes in water well drill bits,oil well drilling bits ,like: Tricone Bits (Steel tooth & TCI bit),Tri- ... rock bit,Milled tooth bit,Roller Cone Bits ,matrix body PDC bits,steel body ...3.API Tricone Rotary Bits1,Types: steel ...