... lifting weight is 1 T. 2. The lifting height of QTZ50 tower crane can be33meters when standing stationary alone, and 121 ... proper hardness, little wind resistance and a pleasant appearance. 3. QTZ50 tower crane adopts the jinkui brand electric parts which are ... for a long time, reducing breakdowns and improving efficiency. 4. QTZ50 tower crane has helmet structures with two hoisting points, adopts ...