Self-drilling anchor bolt R25 for tunnelling and geotechnical engineering

US $9 / M

Min. Order: 2000 M

tunneling and mining bits

TIDEWAY LONG SHANK DRILL BIT SDS MAX T.C.T TUNNEL DRILL FOR STONE OR WALL

Crawler type fully hydraulic tunnel drilling rig for coal mines

Hollow Grouting Drill Bit Tunnel Track Rail Road Rock Bolt

R28 button bit for rock drilling/tunneling and drifting

US $13.5 / pc

Min. Order: 10 pc

25mm Round Shank Chisel Bits C31HD for Trenching and Tunneling

US $4.5 / pc

Min. Order: 200 pc

drifting and tunneling