R32, R35, T38, T45, T51
Nitriding Treatment
Forging
High-Quality Hard Alloy, Best Quality Steel
Soft-Hard Formation
Ore Mining, Coal Mining, Well Drilling
Rock Drilling, Core Mining, Well Drilling
Small Hole Drilling, Gas Deep Hole Drilling, Boreh
Blue, Golden, Black, Red, Customize
1 Inch to 24 Inch
Carbide Thread Buttons Drilling Bits for Rock, Min
Standard Export Packing.
R32, R35, T38, T45, T51