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The hammer range varies from 2.5”to 12”. SD6 type DTH hammer means 6 inch hammer that are the most widely used for water well drilling, it has a large bit shank in order to bear the high torque during deep well drilling,

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DTH hammer is a percussion system driving a piston inside hammer body with up and donw motion by compressed air and transmitting an intensive percussion energy to the bit to enable the drilling by crushing the rock. Drilling method by DTH hammer exerts high drilling performance especially for drilling hard rock and contributes for shortening ...

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