1. High quality

Raw material is the foundation of produce and the first hurdle to guarantee quality Yongli tower crane bulk purchase steel directly form big steel factories like baogang, improve the safety of product.

2. Electrical mechanism

Select and use France Schneider contactor, broken phase and phase sequence protection and complete protection for motor overhead, this can guarantee electrical mechanism run normally and safely.

3. Hoist mechanism

Brake wheel adopts cast steel materials, surface quenching and external circular, control the beating degree strictly. At the same time, also carrying on balance tests. Each hoisting mechanism is carrying on no-load, static load, dynamic load and so on, guarantee the reliability, safety and durableness.

4. Derricking mechanism

Derricking mechanism with free maintenace planetary reducer and cone brake motor, is well-knit in structure, stable and powerful in trolley, high endurance and low failure rate.

5. Slewing mechanism

Slewing motor adopts winding motor and hydraulic transmission. Slewing is stable and powering.