In the atmosphere, zinc is far more resistant to corrosion than steel; under normal conditions, zinc’s corrosion resistance is 25 times that of steel. A zinc coating on the surface of the light pole protects it from corrosive media. Hot-dip galvanizing is currently the most practical, effective, and economical ideal coating for steel against atmospheric corrosion internationally. Tianxiang uses advanced zinc-based alloy hot-dip galvanizing technology, and its products have been inspected by the Technical Supervision Bureau and are of excellent quality.
The purpose of galvanizing is to prevent corrosion of steel components, improve the corrosion resistance and service life of steel, and also enhance the decorative appearance of the product. Steel weathers over time and corrodes when exposed to water or soil. Hot-dip galvanizing is generally used to protect steel or its components from damage.
While zinc does not readily change in dry air, the more alkaline zinc carbonate forms a thin film in humid environments. This film protects internal components from corrosion and damage. Even if certain factors cause the zinc layer to deteriorate, the damaged zinc can, over time, form a micro-cell composite in the steel, acting as a cathode and being protected. The characteristics of galvanizing are summarized as follows:
1. Excellent corrosion resistance; the zinc coating is fine and uniform, not easily corroded, and allows gases or liquids to penetrate the interior of the workpiece.
2. Due to the relatively pure zinc layer, it is not easily corroded in acidic or alkaline environments, effectively protecting the steel body for a long time.
3. After the chromic acid coating is applied, customers can choose their preferred color, resulting in an aesthetically pleasing and decorative finish.
4. The zinc coating technology has good ductility, and it will not easily peel off during various bending, handling, or impacts.
How to choose galvanized light poles?
1. Hot-dip galvanizing is superior to cold galvanizing, producing a thicker and more corrosion-resistant coating with wider applications.
2. Galvanized light poles require a zinc coating uniformity test. After five consecutive immersions in a copper sulfate solution, the steel pipe sample should not turn red (i.e., no copper color should appear). Furthermore, the surface of the galvanized steel pipe must be completely covered with the zinc coating, without any uncoated black spots or bubbles.
3. The zinc coating thickness should ideally be greater than 80µm.
4. Wall thickness is a key factor affecting the performance and lifespan of the light pole, and adhering to national standards is fundamental to ensuring product quality. To help you make a better choice, we provide a formula for calculating the weight of the light pole: [(outer diameter - wall thickness) × wall thickness] × 0.02466 = kg/meter, allowing you to accurately calculate the weight per meter of steel pipe based on your actual needs.
Tianxiang specializes in wholesale galvanized light poles. We use high-quality Q235/Q355 steel as our core material, employing hot-dip galvanizing technology. The zinc coating thickness meets standards, providing rust resistance, wind resistance, and strong weather resistance, with an outdoor service life exceeding 20 years. We have complete qualifications, support bulk customization, and offer preferential factory prices for bulk purchases. We provide comprehensive quality assurance and timely logistics delivery. Welcome to contact us!
Post time: Dec-03-2025
