QAY50 All Terrain Crane is one of all terrain crane series developed on the basis of QAY25. The crane is designed with sufficient absorption of domestic and abroad successful experiences, adoption of mature crane technology, use of new technology and new material. “U” shaped boom profile, constant output variable displacement system, hydraulic pilot proportional control, hydro-pneumatic suspension, auto-shift transmission, this crane class has high lifting capacity, powerful drive, good passing ability, wide application, and with safe and reliable operation.