C31HD And B47K22H hard facing type are finished

A B47K22H drill bit is a type of tungsten carbide bullet tooth or cutting tool used in heavy-duty construction, mining, and foundation drilling for excavating hard soil, gravel, weathered rock, and concrete. These bits feature a tough alloy steel body and a hard carbide tip for high wear resistance, designed for rotary drilling rigs, augers, and piling machines, providing strong penetration and efficiency. 

Key Features & Applications:
Type: Bullet teeth (conical, rounded) with a tungsten carbide insert.
Material: High-strength alloy steel body (like 42CrMo/ASTM4140) with a heat-treated, hardened tip for durability.
Usage: Rotary drilling buckets, augers, core barrels, and trench cutters for piling.
Machinery: Fits Bauer, Casagrande, Soilmec, mait, and other drill rigs.
Performance: Offers strong penetration, high toughness, and excellent wear resistance for efficient drilling in tough ground.