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QTZ300A(TC7030A) tower crane is a fixed, self-elevating, and attached tower crane. In addition to its optimized parameters, reliable performance, well-looking appearance, and excellent quality, its advantages include long boom, larger working coverage, hydraulic rising, and tandem mounted tower body. the beautity of the design is made up by its easy operating, good applicability, high maintenability, and low price-value ratio, as well as meeting the requirements from construction units at different levels. Its maximum lifting height is greatly increased by its self-elevating and attached design. It is capable to meet the construction requirement of all kinds of industrial, commercial, office, and civil buildings lower than 141 meters, and thus is an ideal tower crane machine in civil construction industry.
Main features of QTZ300A(TC7030A) tower crane：
（1）The rated lifting moment of QTZ300A(TC7030A) tower crane is 300 t.m. The max working range is 70m. Max working range lifting weight is 3.0t. Large coverage improves transport efficiency.
（2）The standard section of the tower body is a sheet-mounted structure, and sheets are bolted together. This way brings convenience to disassembling and assembling, transporting, stacking, and storing.
（3）QTZ300A(TC7030A) tower crane is equipped a set of hydraulic rising mechanism, which may not only smoothly lift-up, but also accurately and reliably position.
（4）The hoisting mechanism is a dual-motor system, provides slow moving in function. It offers smooth starting and accurate positioning, besides, its high speed gear is able to give fast working speed with high working efficiency.
（5）The wide and brilliant operator cab brings widen field of vision, convenient and comfortable operation.
（6）The fail-safe device not only is complete, and high accuracy, but also works reliably, can be adjusted in a simple and convenient way.
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