... CHINA 3.FAVOURITE PRICE AND BEST QUALITY 4.BEST SERVICE QTZ80-(TC5613,TC5018,TC4424) itemUnitparametera=2a=4rated hoisting momentt . m80working radiusm2 ... .84.004.004.003.692.992.48Properties and merits of QTZ80(5613) tower crane :1QTZ80(5613) tower crane : Rated moment of ... timing, twisting moment large when starting, operate smoothly, advanced function. QTZ80 tower crane