... Famous Trademark of China 1. UsesHONGDA ZJ40 piling rig is an efficient boring rig in big-bore pile-base project construction, which ... control slewing platform combined with parallelogram amplitude varying device makes boring tool position rapidly and accurately.3.8 Drilling depth ... coal-burning), Stabilized SoilMixing Plants, Rotary Drilling Rigs... Rotary Drilling Rig (60m, 200m,300m,500m,1000m)