... speed. 3,Utility patent 4,Widely used 5,Full hydraulic chuck Drilling Machine(HGY-1500T) Brief introduction: 1.32 years professional ... meet various needs.2) Adopted from the 'jiefang"CA151 auto parts, such as clutch and gear-Box.3) Reasonable ... tower, all the work are performed by the hydraulic system. Use of Drilling Machine(HGY-1500T): for geotechnical investigation, exploring, prospecting, ...