Truss type gantry crane Single girder gantry crane is used wih CD MD hoists.It is track travelling small and medium-sized crane.Its proper lifting weight is 3 to 20 tons.Proper span is 12 to 13 meters,its proper working temperature is -20°C to 40°C.This product is a regular crane widely used at open fround and wearhouse to iqad,unload..