XCMG XZ720E HDD horizontal directional drilling rig Technical Specification Model: XZ720E Horizontal Directional Drill(HDD) Manufacturer：XCMG Foundation Construction Machinery Group Co.; Ltd. XCMG XZ720E HDD horizontal directional drilling rig is an integrated full self-contained design, which adopts a number of advanced control technologies such as closed energy-saving circuit, hydraulic pilot control and load sensitive control, as well as the company’s proprietary …