1.Rotating and push-pull adopts American Sauer auto variant system, pilot control. The hydraulic system can increase 15-20% working efficiency, reduce 50% heating, and save 15-20% energy. 2.Hydraulic system adopts big flow independent oil cooler, the hydraulic oil radiating fast, reduce the wearing of hydraulic components, avoid leakage of the sealing parts, ensures the hydraulic system can work long time stably even in hot temperature. 3. Equips with Cummins engine, strong power, stable performance, low fuel consumption, low noise, environmental protection. 4. The power head with booster, the push-pull force can reach 1100kN after boosting, ensures the safety during big pipe diameter construction. 5. The beam adopts big angle adjusting structure, greatly increase the range of entry angle, and ensure the crawler will not left the ground at big angle, increase the safety. 6. Line walking system, ensure the safety of people and machine during walking.

Model	GD60/120
Engine	Cummins, 194KW
Max torque	32000N.m
Push-pull drive type	Rack and pinion
Max push-pull force	600/1200kN
Max push-pull speed	40m / min.
Max slewing speed	110rpm
Max reaming diameter	1400mm (depends on soil condition)
Max drilling distance	800m (depends on soil condition)
Drill rod	Φ89x4500
Mud pump flow	600L/m
Mud pump pressure	10Mpa
Walking drive type	Crawler self-propelling
Walking speed	2.5--5km/h
Entry angle	9-25°
Max gradeability	18°
Overall dimensions	9200x2350x2550mm
Machine weight	16000kg

7. Equips with mechanical arm for rod loading and unloading, convenient and fast, increase the working efficiency. 8. Adopts international famous hydraulic components, greatly increase the reliability and stability of the machine. 9. The electrical circuits is of simple design, low breakdown, convenient for maintenance. 10. With rack and pinion system, high efficiency, high stability, convenient for maintenance. 11. The crawler is of steel crawler with rubber pad, it can bear high load, and can walk on all kinds of roads.