HONGWUHUAN crawler Drilling Rigs are suitable for mining, quarrying, railways, transportation, water conservancy, building materials, military and other open-air engineering drilling deep blasting, high efficiency drilling operation. Also widely used in bolt support, trench excavation, sewer engineering drilling operations. HC725.HC726.HC728.HC420.HC430.H680 series crawler DTH drilling rigs are new drilling rigs, developed to meet the market demand, excellent performance, flexible operation, full features, more wider adaptability, high cost performance. In order to adapt to different working conditions and customers` requirements, various specifications of diesel engines and motors are used to meet various requirements.