... -climbing, Inside-climbing and Luffing Flat-top Tower Cranes 1.QTZ300(7031)Tower Crane2. Jib=70m3. Max Load=12T; Tip load=3 ... the control system and the work efficiency of the tower crane.III. The tower crane is equipped with all kinds of reliable safety ... .Our main products are Tower Cranes (3T-25T, stationary, mobile, outside-climbing, inside-climbing, horizontal-jib, luffing-jib, hammer-head, flat- ...