8 1/2 '' single roller cone bit core barrel drilling HDD drill bit
8 1/2〞replaceable tricone single roller cone bit
4 1/2''inch 114mm IADC 537 tricone drill head bit deep geothermal well bit
7 1/2''190mm IADC 537 tci tri-cone drilling rock bit
23'' IADC 115 milled tooth tricone roller rotary cone steel tooth bit
15 1/2'' 444mm IADC 117 rock drilling tricone steel tooth bit soft drill bit
17 1/2'' 444mm IADC 115 steel tooth tricone drill bit APi thread
8 1/2'' 215mm IADC 637 conical insert tooth tci tricone drilling rock roller bit
Our main products: tricone bits, PDC bits, HDD hole opener, foundation single roller cutters,drag bit and related tools
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