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.... Maximum hole deviation control. 2. Concave Face The all-round application bit face specifically for medium hard and homogenerous rock formations. Good hole deviation control and good flushing capacity. 3. ...
...bit SD10 TH10 NUMA100 For Water Well Piling Foundation Drilling The drill bits offered by Tianhe Drilling are manufactured to the most stringent standards, using high quality materials to provide you with a...
...o has a longer life than the diamond bit. The drilling speed is low, the centrifugal force is small, and the impact of the drilling tool on the hole wall is small. Moreover, this drilling method uses ......