Well Drilling,Coal Mining,Quarry Drilling
CE, ISO9001: 2000, API
CIR75,CIR90,CIR110,CIR130,CIR150,CIR170
Tungsten Carbide, High Manganese Steel
Air/Sea/Express
High Performance
Down The Hole (DTH) Bit
Spherical; Ballistic; Parabolic
Wooden Box or as Customers Inquire
CIR 50-250mm