... methods and apply to many purposes. The series of tower crane has a horizontal jib frame, trolley travelling, hydraulic self-climbing, original mechanism ... your purchase of our products. the main technical of QTZ40A Tower Crane ModelParametersTC(4708)Tip load capacity(T)0.8Max .Radius(M ... Total WeightIndependent Structure Weight(KG)21021Counter Weight(T)8.10 Tower Crane(TC4708)