As solar power stations keep expanding, the importance of solar PV mounting structures for ensuring station safety is paramount. Among the various types available on the market, hot-dip galvanized and zinc-aluminum-magnesium structures are prevalent, but distinguishing between them can be confusing for many. This article aims to clarify by explaining the differences and addressing common questions about both types.

1.Basic Information

Hot-dip galvanizing (HDG) involves coating fabricated steel by immersing it in molten zinc. The steel plates are first stamped, bent and punched to form steel structures, which are then transported to the factory for hot-dip galvanizing. During galvanizing, the steel is pickled to remove iron oxide on the surface, then immersed in a zinc tank to create the hot-dip galvanized structures.

Zinc-aluminum-magnesium, based on the hot-dip galvanizing process, is a coating formed by high-temperature solidification of 90% zinc, 10% aluminum and magnesium. The steel strip with this coating is used for various processes such as cold bending, straightening, cutting, and punching to create specific shapes to form the zinc-aluminum-magnesium structures.

2. Application Features

Hot-dip galvanized structures hold high strength and load-bearing capacity, ideal for diverse building needs. The iron alloy layer formed through galvanizing enhances toughness, reducing fracture risks and bolstering earthquake resistance. These structures excel outdoors and in humid, corrosive conditions, retaining anti-corrosion properties. For standard use, a minimum thickness of 2 mm is recommended, with 2.5 mm advisable for windy areas. The galvanized coating, uniform and firmly adherent, resists rust, ensuring a lifespan of up to 25 years.

But it is not recommended to cut or drill the structures once they have been manufactured. Additional anti-corrosion measures are needed to prevent sulfur dioxide in the air from causing red rust if cutting is necessary. And high-temperature welding is required to connect the bolts and structures during installation.

Zinc-aluminum-magnesium structures combine the benefits of traditional hot-dip galvanized structures with the remarkable ability of self-healing. The coating components, primarily zinc hydroxide, alkaline zinc chloride, magnesium hydroxide, gather around the cut surface, creating a robust protective film, allowing for regeneration of a fresh protective layer even if scratched or worn. And the zinc-aluminum-magnesium steel plate excels in stretching, stamping, bending, and welding, allowing for a service life of 30-35 years.

However, they are not suitable for welding due to potential strength compromise at high temperatures. impacting the load-bearing capacity of the mounting structures. It is designed with modular construction for easy, simplified installation.

3. Production Cost

Hot-dip galvanizing is complex with multiple processes, including involving immersing steel in molten zinc. And it requires expensive zinc ingot raw materials. In contrast, zinc-aluminum-magnesium coating is simpler, which is applied through methods like spraying and roller coating, and the prices of aluminum and magnesium raw materials are relatively low.

Hence, the cost of hot-dip galvanized structures are slightly higher compared to zinc-aluminum-magnesium. While both options offer excellent corrosion resistance, the decision should be influenced by individual requirements and financial considerations.

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Advantages of Huge Energy Solar PV Mounting Structures

Huge Energy solar PV mounting structures feature carefully selected materials, such as corrosion-resistant aluminum alloys, high-strength steel products and top-quality stainless steel bolt sets. Precision machining ensures durability in varied environments. Our custom design service ensures optimal mounting angles for maximum energy capture.

We offer 10 years of quality assurance and a 25-year design life. Our "safety-first" engineering strategy has resulted in a decade of accident-free operations. Count on us for professional services from consultation through installation to ongoing maintenance.

We meet your expectations in every aspect and get your investment to the maximum return.