HD45 DTH hammer impactor drilling hole: 1.down hole impactor 2.HD45 hammer high pressure 3.drill rig hammer 4.impactor 99mm HD45 DTH hammer impactor drilling hole Technical data: length1030mmweight39kgexternal diameter99mmbit shankcop44 DHD340hole range110-135connection threadAPI 2 3/8'' Regworking pressure1.0-2.5Mpaimpact rate at1.7Mpa27Hzrecommended rotation speed25-40r/minair consumption1.0Mpa ...
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