4", 4.5", 5", 5.5" RC hammer Reverse Circulation Application RC hammers and bits are used in hole drilling in mines, hydrology and ...
DTH Reverse Circulation RC Hammer And Drill Bit Technical Parameters RC hammer:the exhaust air,and cuttings are discharge through the center return .....
DTH Reverse Circulation Bits Hammer For Exploration Drilling Model Common name Product code Thread Outer Diameter (mm) Rec. hole size Length without ....