Standard Galvalume Steel Plate Coil Zinc Coated AZ30-AZ150g/m2 Chromated Surface

Product Specification

Product Description:

Galvalume is a highly durable and corrosion-resistant roofing material that consists of a steel core coated with a specialized alloy composed of approximately 55% aluminum, 43.5% zinc, and 1.5% silicon. This unique combination offers exceptional protection against rust and environmental wear, with corrosion resistance that is up to twice as effective as that of traditional galvanized steel. The development of Galvalume began in the early 1970s, pioneered by Bethlehem Steel Construction Company, and it has since become a benchmark in the roofing and construction industry.

The manufacturing process involves a hot-dip coating method, in which steel coils are passed through a bath of molten aluminum-zinc-silicon alloy. This ensures uniform adhesion of the coating to the steel substrate, forming a tightly bonded layer that shields the steel from moisture, chemicals, and other corrosive elements. After coating, the steel can be left in its natural mill finish, which has a smooth, slightly metallic appearance, or it can be pre-painted in a wide range of colors to suit different architectural styles and design preferences.

Thanks to its impressive durability and versatility, Galvalume is now one of the most widely used roofing materials across residential, commercial, agricultural, and industrial buildings. It performs exceptionally well in both hot and humid climates and colder regions, resisting cracking, peeling, and weather-induced degradation. Moreover, Galvalume is a low-maintenance solution—it does not require frequent repairs or surface treatments—and offers a lifespan of at least 40 years, delivering long-term cost savings and peace of mind for property owners. Its performance, aesthetic adaptability, and longevity make it a go-to choice for sustainable and dependable roofing systems.

Specification

Applications:

1. Buildings and Constructions

Galvanized steel plays a crucial role in the building and construction industry due to its strength, durability, and resistance to corrosion. Common applications include floor decks, ceilings, ductwork, and roofing systems. It is widely used for wall siding, window sashes, structural beams, and fencing, providing long-term support with minimal maintenance. Outdoor elements such as verandas, shutters, and awnings benefit from its weather resistance. It is also utilized in partitions, interior decoration, piping systems, ventilators, storage sheds, and culverts, where both structural integrity and appearance are important.

2. Transportation

In the transportation sector, galvanized steel is favored for its ability to withstand harsh environmental conditions. It is commonly used in the production of vehicle body panels, air cleaner housings, oil and fuel filters, and fuel tanks. It also plays a role in the manufacture of shipping containers and highway safety barriers, where durability, impact resistance, and corrosion protection are essential for long service life.

3. Appliances

The home appliance industry makes extensive use of galvanized steel for its clean appearance and resistance to rust and wear. Applications include light fittings, washing machines, dryers, air coolers, and vending machines. It is also widely used in water heaters, cooking stoves, refrigerators, freezers, and tool boxes, where both functional performance and aesthetic appeal are important to consumers.

4. Agriculture

In agriculture, galvanized steel offers a cost-effective and weather-resistant solution for various structures and equipment. It is commonly used in the construction of barns, grain dryer panels, and animal housing facilities. Additional applications include hopper structures, bar supports, irrigation systems, and greenhouses, where reliable material performance is needed in challenging environmental conditions.

5. Others

Beyond industrial and commercial uses, galvanized steel is also utilized in a variety of general-purpose applications. These include furniture and office equipment, entertainment and vending machines, carports, and garden or storage sheds. Its versatility, ease of fabrication, and low maintenance needs make it an ideal choice for many residential and light-industrial products.

Packing and Shipping:

FAQ:

1.What is Galvalume steel coil?

Galvalume steel is carbon steel coated with an alloy that combines the impervious properties of aluminum with the malleability and galvanic protection of zinc. The alloy coating gives galvalume steel coil and sheets a smooth, plain finish.

2.What is the primary difference between Galvalume and galvanized steel?

Galvalume was developed in 1972. Essentially it is a 55% aluminum to 45% zinc alloy coated sheet steel. This blend is what makes it different than Galvanized Steel which is covered with a zinc-only coating.

3.What are the disadvantages of Galvalume?

Not Suitable for Coastal Areas: Galvalume's coating is not designed to withstand the challenges posed by coastal environments, including properties exposed to crashing waves, expansive bays, marshes, and other coastal settings.