Hejian Hengji Bit Manufacture Co., Ltd.
divide by size
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steel tooth trocone drill bit/ Tri cone bit -
PDC rock drill bit/ well drilling PDC
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PDC drill bit for petroleum drilling -
PDC steel body rock bit -
PDC/tricone/ petroleum drill bit -
API PDC WELL drill rock bit
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Vanguard Directional Tricone Roller Cone Bits -
API 8 9 10 IADC steel tooth drill bit/used water well drilling bits -
Vanguard Tricone Roller Cone Drill Bits -
Vanguard Steel Tooth Drill Bits -
Vanguard Geothermal Drill Bits -
API 11 IADC steel tooth drill bit/used water well drilling bits -
8 1/2" TCI Tricone Bits -
12" TCI Tricone Bits -
17 1/2" TCI Tricone Bits -
clay soft mudstone TCI Tricone Bits -
shale salt loose sand TCI Tricone Bits -
soft limestone sand dolomite TCI Tricone Bits -
quarzite quartzitic sand chert basalt TCI Tricone Bits -
hard limestone steel tooth bit