The types of street light poles mainly include the following:
Stainless steel poles: This type of pole is usually treated with hot-dip galvanizing and has a lifespan of up to 15 years. They are often used in places such as courtyards, communities and parks.
Iron poles: This is the most common type of pole in my country. The surface treatment is usually spraying (painting or powder coating) and the lifespan is about 3-5 years. They are widely used in road lighting.
Aluminum alloy poles: Made of high-strength aluminum alloy, it has a corrosion resistance of more than 50 years and does not require any surface treatment. This type of pole is not only beautiful, but also highly safe and is often exported to developed countries.

