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The optimum range of hole size for dth drilling is 90 mm (3.5”) to 254 mm (10”). smaller holes are generally drilled using tophammer drill rigs, and larger holes generally use rotary drill rigs. as a rule of thumb, the smallest hole diameter a dth hammer can drill is its nominal size. i.e. standard 102 mm (4”) hammer will drill a hole down to a minimum diameter of 102 mm (4”).

Drill steel maker Supplier using a higher enterprise reputation,from China.Our solutions contain:Drill steel maker Products are mostly exported to European countries,it can be preferred in many nations.


Our company primarily engaged and export Drill steel maker. we depend on sturdy technical force and constantly create sophisticated technology to meet the demand of Drill steel maker customers. We're sincerely welcome close friends from different circles at dwelling and abroad come to cooperate!

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