Threaded hollow bar anchor for geotechnical/underground engineering/spiling bolt

US $35 / pc

Min. Order: 500 pc

75U-3 Full Hydraulic Underground Core Drill Rig

Kimdrill Strand Steel prestressed pc wire for anchoring

Professional Manfacturer Drilling Tools Underground Coal Mining Cutting bits

US $7 / pc

Min. Order: 10 pc

Hard Rock PDC cone bit Used for drill underground core

US $150 / Piece

Min. Order: 1 Piece

full hydraulic underground drilling rig