CGSL-300A-type projects, well drilling rig with a large gantry trailer, its machinery from the frame, to facilitate the long-distance mobile trailer equipped with automatic feeding mechanism; CGSL-300A-type projects, well drilling for foundation, building pile , geological mining, ports, dams and deep wells based works. 
 Technical parameters 
 Drilling depth (m) 300 80 
 Hole diameter (mm) 500 1500 
 Inner diameter of turntable (mm) 340 
 Wheel speed (forward and reverse) (r / min) 36; 52; 91 
 Rated output torque turntable (KN.m) 10 
 Main hoist lifting capacity (single rope) (KN) 22 
 Auxiliary hoist lifting capacity (single rope) (KN) 17 
 Carrying capacity of the tap (KN) 150 
 Host supporting power (KW) 22 
 Work status (mm) 6000 × 2400 × 9000 
 Transport status (mm) 8550 × 2400 × 2775 
 Weight (kg) 5180