There must be a lifespan, but the length of time is different. When its lifespan exceeds 100 years, it is considered permanent for us humans. If you protect it well, it will last more than 20 years. As long as the quality meets the standards, 50 years is not a big problem. The key is that the metal towers exposed in the air need to be treated with rust prevention.
Yes. Wind turbines include towers and blades. The tower is an important part that supports the entire wind turbine. It needs to withstand the huge wind pressure from the wind and the dynamic load generated by the rotation of the blades. Steel bars are the main structural material of the tower. It plays a strengthening and supporting role and undertakes stress-bearing tasks.