Hejian Hengji Bit Manufacture Co., Ltd.
Tricone Bits
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IADC 527 tungsten carbide insert bit for soft limestone -
IADC 527 tungsten carbide insert bit for sand with high drillability -
IADC 535 tungsten carbide insert bit medium soft formatin -
IADC 545 tungsten carbide insert bit medium soft formatin -
IADC 537 tungsten carbide insert bit medium soft formatin -
IADC 837 tungsten carbide insert bit for very hard formation -
IADC 837 tungsten carbide insert bit for quartzite -
IADC 837 tungsten carbide insert bit for chert -
IADC 837 tungsten carbide insert bit for basalt -
IADC 837 tungsten carbide insert bit for granite
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IADC 737 tungsten carbide insert bit for hard limestone -
IADC 737 tungsten carbide insert bit for dolomite -
IADC 737 tungsten carbide rock bit for firm sands -
tungsten carbide rock bit hard with high abrasiveness -
all types of button bit -
api oil drill bit codes -
best drill bit for oil well driling -
api button drilling bits with 3 nozzle -
88.9mm Button bit rubber sealing -
88.9mm Button bit metal sealing