Drifting and Tunnelling
Drifting and tunnelling tools include rods, shank adapters, couplings and bits. We have mainly 3 threads: R25, R28 and R32. Diameter: 38-127mm,They can be used with button bits, cross bits and reaming products.
Thread button bits made with high quality of best quality alloy steel bar and tungsten carbides, through heat treatment so that it can withstand the toughest rock drilling demands，and transmit intensive impact energy into the rock with the least possible loss of energy