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Company Products>Power Pack YYTZ28h-h2  Product Introduction  See Big Picture Brief： Power Pack YYTZ28-2 YYTZ28-2 power pack:Can drive two YYT28  hydraulic leg drills. Power consumption about 16 kw per hour. And the unit  applicable to the mining culvert,roadway,water conservancy and hydropower  project. In the F8-12 hardness rock and drill Φ40 mm diameter and 2.5m  depth about 14-20 holes per hour http://www.dsrockdrill.com。