... /20m/min7.Climbing speed:0.4-0.66m/min 1.The rated load moment of QTZ80 tower crane is 800KN. m, the ... hardness, little wind resistance and a pleasant appearance. 3. QTZ80 tower crane adopts the jinkui brand electric parts which are famous in ... for a long time, reducing breakdowns and improving efficiency. 4. QTZ80 tower crane has helmet structures with two hoisting points, adopts small trolleys ...