Product Description: ST-200 mobile drilling machine is  widely used and hydraulic feeding , which has the characteristics of large power, large lifting force (2T) and high transmission torque. 1. Engineering geological investigation of railways, hydropower, traffic, bridges, dam foundations and other buildings. 2. Geological core drilling, physical prospecting. 3. Small grout Confucius, drill hole drilling. 4. Small well drilling. This drilling machine adopts  big driven drill pipe and double guide rod to increase stability .This rig can move 350mm back and forth on the  base, so it facilitates the removal of the drill pipe.  Product Parameter: Drilling depth 200m Max open hole caliber 300mm End hole caliber 75mm Drilling Rod diameter 60mm Drilling angle 90°~75° Drill rig moving stroke 300mm Power Diesel engine 22HP Spindle speed 64 128 287 557 r/min Spindle stroke 450mm Max.Single line lifting capacity 2400kg Max.Single line lifting speed  0.41 0.82 1.64m/s Wirerope caliber 13mm Mud pump Diesel 170L/min Work pressure 1.5Mpa Water inlet pipe diameter 40mm Water outlet pipe diameter 30mm