Dun An Heavy Industry has strong technical strength, the company has a high-level technology research and development team, through long-term and in-depth technical cooperation with Jilin University, Zhejiang University and other universities, research and development, manufacturing with complete independent intellectual property rights of the full casing full rotary drill, and obtained more than 40 national patents.

Xuzhou Xinda Slewing Bearing produce slewing ring for machinery type DTR1305, DTR1505H, DTR2005H, DTR2605H, DTR3205H and other model series for Dun An’s shield safety casing full rotary drilling rig. Shield safety casing full rotary drilling rig is a new type of transfer integrating full hydraulic power and transmission, electromechanical hydraulic joint control, with a new, efficient and environmentally friendly drilling technology, in recent years, it has been widely used in urban subway, deep foundation pit retaining occlusion pile, waste pile (underground barrier) cleaning, high-speed rail, road and bridge, urban construction pile construction, reservoir dam reinforcement and other projects.