Galvanised Steel Coil

Galvanised Steel Coil is a versatile building material made from galvanized, aluminized zinc, or electro-galvanized steel sheet as the base, coated with an organic paint layer and cured through baking. It offers outstanding performance and is widely applied in various construction and industrial fields. Below are its core advantages:

Core Advantages of Galvanised Steel Coil

1. Lightweight, High Strength & Cost-Efficient
   Galvanised Steel Coil is lightweight—approximately 1/6 the weight of traditional materials—which greatly reduces structural load, making it ideal for renovation projects and earthquake-prone regions. The base metal, made of high-strength galvanized or aluminized zinc steel, provides excellent impact resistance and a service life ranging from 15 to 50 years.

2. Exceptional Corrosion & Weather Resistance
   The combination of a galvanized/aluminized zinc substrate and an organic coating offers dual protection against acid rain, salt spray, and UV rays. Its durability exceeds that of ordinary galvanized steel by 1.5 times. Certain coatings, such as PVDF, maintain stability under extreme temperatures (-30°C to 70°C) and withstand strong winds up to Level 12.

3. Attractive & Customizable Appearance
   Available in a variety of colors (like grey-white, ocean blue, brick red) and finishes, Galvanised Steel Coil offers both metallic shine and stone-like textures. The surface retains color well over time and requires minimal upkeep, making it a decorative and practical choice.

4. Efficient Construction & High Workability
   Galvanised Steel Coil is easy to cut and bend, suitable for roofing applications with slopes from 12° to 90°. Dry installation with just 4–6 nails per sheet supports streamlined production and shortens construction timelines, enhancing overall efficiency.

5. Eco-Friendly & Economical – 100% Recyclable
   The production process minimizes environmental impact by reducing emissions and eliminating the need for excessive paint spraying. Galvanised Steel Coil is fully recyclable and complies with green building standards. It delivers excellent long-term value with low maintenance requirements.

6. Enhanced Functional Performance
   – Heat Resistance & Reflectivity: The hot-dip aluminized zinc substrate reflects heat and light twice as effectively as regular galvanized steel, resists oxidation under high temperatures, and improves overall energy efficiency.
   – Thermal & Acoustic Insulation: When used in sandwich panels, it significantly enhances insulation and soundproofing, making it ideal for buildings that require a comfortable indoor environment.

Specification

Application Scope of Galvanised Steel Coil

1. Construction field (about 80% of total use)
   Used for roofing and walls in industrial and commercial buildings such as factories, warehouses, and shopping malls, commonly in corrugated sheets or polyurethane sandwich panels.
   Public facilities like gymnasiums, airports, bus shelters, and ventilation ducts benefit from both aesthetic appeal and functional performance.
   Civil buildings including villas and self-built homes use color-coated steel coils for flat-to-pitched roof renovations, with lightweight design reducing structural load.

2. Home appliance and furniture manufacturing
   Color-coated galvanized steel sheets are widely used for refrigerator and air conditioner shells, offering durability and corrosion resistance along with an attractive finish.
   They also serve as surface materials for furniture like bookshelves and cabinets to improve product texture and appearance.

3. Transportation and Advertising

The interior parts of automobiles, oil pans, and other components, as well as the shells of high-end models, are coated with high-weather-resistant coatings.

Billboard and sign production feature bright and durable colors.

4. New Energy and Temporary Buildings

Building-integrated photovoltaic (BIPV) roofing meets the growing demand for new energy solutions.

Temporary construction site houses and prefabricated houses offer quick installation and reuse.

Market Trends and Selection Suggestions

High-end and customized: Future demand favors environmentally friendly (such as PVDF coating) and highly weather-resistant products, especially in new energy vehicles and smart home appliances.

Substrate selection:

(1) Hot-dip aluminized zinc substrate: Suitable for outdoor buildings, offering corrosion resistance 2 to 5 times greater than galvanized sheets.

(2) Galvanized electroplated substrate: Suitable for indoor household appliances, with excellent processing performance but relatively weaker weather resistance.

Galvanised Steel Coil, with its comprehensive performance, has become a core material in modern construction and manufacturing, excelling in lightweight design, environmental protection, and adaptability to complex climates. When selecting a product, it is essential to choose the appropriate coating (such as polyester, silicon-modified polyester, or PVDF) and substrate according to specific applications to achieve the best cost performance.