CIR50, CIR60, CIR76
Nitriding Treatment
Forging
High-Quality Hard Alloy, Best Quality Steel
Soft-Hard Formation
Ore Mining, Coal Mining
Small Hole Drilling
Rock Drilling, Core Mining, Well Drilling
Blue, Golden, Black, Red, Customize
Small Hole Drill Bit, CIR60 Rock Bit for Rock Exca
Standard Export Packing.
CIR50, CIR60, CIR65, CIR76