Drill Rig: 1.High efficiency,high quality,energy-saving 2.Environmental protection,no vibration,no noise 3.Long durability Long Spiral Drill Rig: Long Spiral Drill Rig is a new product which developed based on domestic and international advanced technology. It is a foundation and basic processing equipment, applied for CFG, precast pile, cast-in-place pile, and diaphragm wall, soft base enhance, ...