32mm, 34mm, 36mm, 38mm, 40mm, 42mm
1 Years
CE, ISO 9001:2000, ISO 9001:2008, API
AISI, ASME, BS, ANSI, JIS, GB, GOST, ASTM, DIN
Polishing
Forging
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
7° , 11° , 12°