DTH Drilling Tools
Dec 22, 2009
for DTH drilling tools, we have: 1, DTH hammer: (1)low pressure shank type: CIR, J, diameter:3"-8" (2)high pressure shank type: DHD, QL, SF, COP, SD, diameter:2"-8" 2, DTH bit (1)low pressure shank type:BR2, BR3, COP32, COP43, COP52, COP62, CIR65, CIR70, CIR80, .....