Yaw ring is a key component in the yaw system of wind turbine and is equivalent to a large sliding bearing. It is located at the bottom of nacelle, the lower end is fixed and connected with wind tower by bolt, the upper end is used to support the entire nacelle mechanism with the help of the sliding surface and its periphery is meshed with four yaw reducer output gears. The yaw motor drives the whole nacelle to rotate slowly, so as to adjust the direction of wind turbine impellers.

The flange is welded on the wind tower sections to connect tower sections and tower foundation. Compare to other flanges, Wind tower flange has larger diameter. A wind turbine flange is the key connection, support and stress parts of wind tower, and is an important component of wind turbine.

Pitch bearing is the component which is for changing the angle of wind turbine blades.  The function of the pitch system is to change the angle of attack of airflow to blades by adjusting the pitch of blades when the wind speed is too high or too low, so as to further change the aerodynamic torque obtained by the wind turbine generator and keep the power output stable. 

Non-ferrous metals. Aluminum alloy is one of the most widely used non-ferrous structural materials in industry of aviation, aerospace, automobile, machinery manufacturing, ships, etc.