The quality of the solar streetlight pole itself determines whether a solar street light can endure strong winds and heavy rain while still providing the best possible light in an appropriate location. What kind of light pole is deemed good when buying solar street lamps? It’s possible that many people are unsure. We’ll talk about this topic from a variety of angles below.
1. Material
This primarily relates to the solar streetlight pole’s material. Q235 steel is the most appropriate material for better solar street light poles because of its durability, affordability, ease of transportation, and resistance to corrosion. Anodized aluminum is another option if funds permit. Tianxiang solar street lamps mainly use high-quality Q235 steel.
Regarding its parameters, the straightness error must not exceed 0.05%, and the wall thickness must be at least 2.5mm. The higher the pole, the greater the wall thickness; for example, a 4-9 meter pole requires a wall thickness of at least 4mm, while a 12-meter or 16-meter streetlight requires at least 6mm to ensure effective lighting and sufficient wind resistance.
Furthermore, the connection between the pole and other components requires small, seemingly insignificant parts like bolts and nuts. Except for anchor bolts and nuts, all other fixing bolts and nuts must be made of stainless steel.
2. Manufacturing Process
① Hot-dip galvanizing process
Generally, Q235 high-quality steel is used. To ensure better performance, both the inner and outer surfaces undergo hot-dip galvanizing treatment with a thickness of 80μm or more, conforming to GB/T13912-92 standard, with a design service life of no less than 30 years.
After this process, the surface should be smooth, aesthetically pleasing, and uniform in color. After a hammer test, there should be no peeling or flaking. If there are concerns, the purchaser can request a galvanizing test report. After sandblasting, the surface is powder-coated to improve quality and enhance aesthetics, adapting to different environments.
② Powder Coating Process
Streetlight poles are typically white and blue, which cannot be achieved solely through hot-dip galvanizing. Powder coating is useful in this situation. The pole’s corrosion resistance is increased and its appearance is improved by applying a powder coating after sandblasting.
High-quality outdoor pure polyester powder should be used for the powder coating in order to achieve a uniform color and smooth, even surface. To ensure stable coating quality and strong adhesion, the coating thickness should be at least 80μm, and all indicators should satisfy ASTM D3359-83 standards.
The coating should provide some UV resistance to prevent fading, and the blade scratches (15 mm by 6 mm squares) should not peel or flake off.
③ Welding Process
The entire pole of a high-quality solar street lamp should be free of undercuts, air holes, cracks, and incomplete welds. Welds should be flat, smooth, and free of flaws or unevenness.
If not, the solar street light’s quality and appearance will suffer. The buyer can ask the supplier for a welding flaw detection report if they are worried.
3. Other
The wiring for solar street lamps is done inside the pole. The pole’s interior environment must be clear of obstructions and devoid of burrs, sharp edges, or serrations in order to guarantee the wiring is secure. This facilitates wire threading and prevents damage to the wires, thus avoiding potential safety hazards.
Outdoor lighting expert Tianxiang offers a direct factory price for solar streetlight poles. Made of Q235 steel, these poles are wind-resistant and durable. Powered by photovoltaics, they require no wiring and are suitable for rural roads and industrial parks. Bulk discounts available!
Post time: Dec-12-2025
