... 2m 3. Max. Drilling Depth: 60m-70m HDR230 Rotary Drilling Rig TLS (Iron Giant) Brand, Famous Trademark of China 1. ... UsesHONGDA ZJ40 piling rig is an efficient boring rig in big-bore pile-base project construction, which ... Engine,hydraulic pump, hydraulic motor, hydraulic valve, reductor,chassis part,electronic control device,and other key parts all adopt international ...