Engineering, water well drilling rig dual hoist group to enhance the capacity, large module, hyperboloid dial to ensure smooth running rig, torque, long life; GS-400-type projects, well drilling rig host for high-rise buildings, public railway bridges, dams, ports, mine geology, large diameter bored piles and deep well irrigation works. 
 Technical parameters 
 Drilling depth (m) 400 80 
 Hole diameter (mm) 500 1500 
 Inner diameter of turntable (mm) 500 
 Wheel speed (forward and reverse) (r / min) 21.5; 38.4; 61 
 Rated output torque turntable (KN.m) 15 
 Main hoist lifting capacity (single rope) (KN) 40 
 Auxiliary hoist lifting capacity (single rope) (KN) 25 
 Carrying capacity of the tap (KN) 240 
 Host supporting power (KW) 30 
 Weight (kg) 3380