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For efficient down-the-hole (dth) drilling, sandvik offers high performance drilling tools to increase your productivity and reduce your total operation cost. sandvik develops tools in close cooperation with the customers to maximize performance and optimize user experience. request a quote find an office

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Elevators, drill pipe elevator, drilling equipment manufacturer / supplier in china, offering 73mm 2 7/8" tubing elevator of drill well accessories, 9 5/8" 5 blades steel body pdc bit drill bit for well drilling, 8 1/2" la617g tricone drill bit for water well drilling and so on.

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”).

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