XCMG XZ520E HDD horizontal directioinal drilling machine Technical Specification XZ520E HDD Technical Specification Model: XZ520E Horizontal Directional Drill(HDD) Manufacturer：XCMG Foundation Construction Machinery Group Co.; Ltd. XCMG XZ520E horizontal directioinal drilling machine is an integrated full self-loading design, which adopts a number of advanced control technologies such as closed energy-saving circuit, hydraulic pilot control, load sensitive control and XCMG’s proprietary technology. …