Hardness DTH Button Bits Foundation Drilling Tools GT60 Environmentally

Foundation Drilling And Designed The Hardness RHC Steel GT60 DTH Button Bits Description: 1. The heat treatment process is been strictly controlled. 2. Plywood case/Wooden case/carton box with foam. 3. Advanced, internationalized, leading production process. 4. The specification can be ajusted depends on using situations. 5. We used the best material to produce. Feature Advantage: 1. Using high-quality raw materials, advanced technology, and strict inspection, we produce high