The model of the Tower crane areQTZ40(4208), QTZ40(4708), QTZ40(4808), QTZ40(4810). The main parameter of each model are showed in follow:
(1), Tower crane QTZ40(4208): Its max lifting load is 4t, Its max lifting height is 30/120m, Its Max working range is 42m, the Lifting speed is72/36m/min, the Slewing speed is 0/0.6r/min, the Derricking speed is 39/26m/min, and the power is 380V/50Hz;

(2). Tower crane QTZ40(4708): Its max lifting load is 3t, Its max lifting height is 30/90m, Its Max working range is 46.8m, the Lifting speed is 51/25.5m/min, the Slewing speed is 0/0.7r/min, the Derricking speed is 39/26m/min, and the power is 380V/50Hz;

(3). Tower crane QTZ40(4808): Its max lifting load is 3t, Its max lifting height is 30/90m, Its Max working range is 48m, the Lifting speed is 51/25.5m/min, the Slewing speed is 0/0.7r/min, the Derricking speed is 39/26m/min, and the power is 380V/50Hz;

(4). Tower crane QTZ40(4810): Its max lifting load is 3t, Its max lifting height is 30/90m, Its Max working range is 48m, the Lifting speed is 51/25.5m/min, the Slewing speed is 0/0.7r/min, the Derricking speed is 39/26m/min, and the power is 380V/50Hz