Hejian Hengji Bit Manufacture Co., Ltd.
rock roller bit
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super quality IADC 8 1/2 diamond bit for oilfield -
diamond pdc core bit for coal mining -
12 1/4 tricone tci bits medium hard for water well drilling -
6'' new and used steel tooth tricone bit -
8 1/2'' new and used steel tooth tricone bit -
14 3/4'' sealed bearing new and used steel tooth tricone bit -
12 1/4'' IADC S123 pdc bit -
8 1/2'' IADC M222 pdc bit -
8 1/2'' IADC M222 pdc bit keep vertical direction of well -
2 to 4 inches soil test drilling machine tricone bits -
12 1/4 inch steel tooth bit -
12 1/4 inch milled tooth tricone bit -
12 1/4 inch tungsten carbide inser drill bit -
bit cone for oil drilling -
slimhole Tricone Drill Bits for hard rock. -
tricone rock bit with pellet for hard ground -
API 5 7/8'' rubber sealing tungsten carbid insert bit/TRICONE BIT/rock bit -
tricone rock bit with pellet for middle hard rock -
API 6 rubber sealing tungsten carbid insert bit/TRICONE BIT/rock bit -
steel tooth trocone bits