DTH Drilling Tools
Features: Fast drilling and can retrieval! High efficiency, the low labor intensity of workers！
usage: Widely used in earth and stone engineering mining Wells drilling construction projects drilling Wells edge pillar support
Model: Medium/Low wind pressure DTH Drill bit：80 90 100 110 120 130 140 150 180 185 200 220
High wind pressure DTH Drill bit：115 127 138 152 165 178 195 203 216 240 254 304