R32, R25, T38, T45, T51, GT60
CE, ISO9001: 2000, API
Tungsten Carbide, High Manganese Steel
Coal Mining,Quarry Drilling or Well Drilling
Air/Sea/Express
High Performance
Down The Hole (DTH) Bit
Flat;Convex;Concave
Spherical; Ballistic; Parabolic
Wooden Box or as Customers Inquire