Street lamp posts, as everyone knows, are typically found on both sides of roads. Street lamp posts must be protected from corrosion and have a longer outer layer because they are subjected to wind, rain, and sunlight. Let’s discuss hot-dip galvanizing now that you know the requirements for street lamp posts.
A successful method for stopping metal corrosion, hot-dip galvanizing—also known as hot-dip zinc plating—is mostly used on metal structures across a range of industries. It involves immersing rust-removed steel components in molten zinc at approximately 500°C, causing a zinc layer to adhere to the surface of the steel components, thus achieving corrosion protection. The hot-dip galvanizing process is as follows: pickling – washing – adding flux – drying – plating – cooling – chemical treatment – cleaning – polishing – hot-dip galvanizing completed.
Hot-dip galvanizing evolved from older hot-dip methods, and has a history of over 170 years since its industrial application in France in 1836. In the last thirty years, with the rapid development of cold-rolled strip steel, the hot-dip galvanizing industry has experienced large-scale development.
Advantages of Hot-Dip Galvanizing
Hot-dip galvanizing is cheaper than other paint coatings, saving costs.
Hot-dip galvanizing is durable and can last 20-50 years.
The long service life of hot-dip galvanizing makes its operating costs lower than paint.
The hot-dip galvanizing process is faster than coating, avoiding manual painting, saving time and labor, and is safer.
Hot-dip galvanizing has an aesthetically pleasing appearance.
Therefore, the use of hot-dip galvanizing for street light poles is a result of practical experience and selection during construction and application.
Does hot-dip galvanizing of street lamp posts require passivation?
Zinc is an anodic coating on steel products; when corrosion occurs, the coating corrodes preferentially. Because zinc is a negatively charged and reactive metal, it oxidizes easily. When used as a coating, its proximity to positively charged metals accelerates corrosion. If zinc corrodes quickly, it fails to protect the substrate. If passivation treatment is applied to the surface to change its surface potential, it will greatly improve the surface’s corrosion resistance and enhance the protective effect of the coating on the lamp post. Therefore, all galvanized layers basically need to undergo various passivation treatments to achieve the protective effect.
The future development prospects of galvanized light poles are promising. New coating processes will undoubtedly be adopted in the future, significantly improving corrosion resistance. Hot-dip galvanized light poles are ideal for a variety of applications, including coastal and high-humidity regions, and have a lifespan of over 20 years. By adding 5G, monitoring, and other features, modular upgrades can be utilized more successfully in rural, industrial, and municipal settings. They are a popular option for engineering procurement because of their enormous development potential, which is made possible by technological advancements and policy support.
High-grade Q235 steel is used by Tianxiang to create streetlights, courtyard light poles, and smart lights. Hot-dip galvanizing, in contrast to regular painted poles, ensures a consistent zinc coating that renders them resistant to salt spray and direct sunlight, providing superior corrosion and rust prevention even in harsh outdoor conditions. Custom heights ranging from 3 to 15 meters are available, and wall diameter and thickness can be changed to suit particular needs.
Our large-scale galvanizing workshop at our factory has ample production capacity, enabling us to promptly fulfill large orders. Affordable prices are guaranteed and middlemen are eliminated with direct supply from the source. We are involved in road, industrial park, and municipal projects. Your cooperation and inquiries are greatly appreciated!
Post time: Dec-10-2025
