The performance of QTZ63 Hydraulic self-lifting Tower Crane is good, and it has following functions: it can be independently installed or attached installed to a building, hydraulic climbing heightened, horizontal boom support, equipped with luffing carriage, self-lifting upper platform. It has standard boom length of 45m, and 50m with an extended boom; Max. Lifting weight 6t; Rated-lifting moment is 630KN.m.