TR220F Rotary Drilling Rig is mainly used in the construction of civil and bridge engineering . It uses advanced intelligent electronic system and load sensing pilot control hydraulic system which ensures safety and reliability of the machine . The main winch hoisting with double pump confluence improves work eficiency greatly. It absorbs advantages of rotary drilling rig at home and abroad in design and process . The main performance and technical parameters reached the intematioral level of the simiar products .
