AS1397 Aluzinc G550 0.45 BMT *940 AFP Aluzinc Used For Roof Panel Metal Tiles AZM150

Introduction:

55% Aluzinc steel coils, also known as Galvalume or Aluminium-Zinc alloy coated steel, are a type of steel coated with an alloy comprising approximately 55% aluminum, 43.4% zinc, and 1.6% silicon. This unique coating provides a combination of the excellent corrosion resistance of aluminum and the galvanic protection of zinc, making it a superior material for various applications.

Composition:

- Aluminum (55%): Provides exceptional corrosion resistance by forming a protective layer of aluminum oxide.

- Zinc (43.4%): Offers sacrificial protection, similar to traditional galvanized steel, protecting the steel substrate by corroding preferentially.

- Silicon (1.6%): Enhances adhesion of the coating to the steel and helps maintain the integrity of the alloy layer during fabrication.

The metal house building industry in Fiji has gained popularity due to the country’s tropical climate and the need for durable, cost-effective, and sustainable housing solutions. Metal-based construction materials offer resilience against harsh weather conditions such as cyclones, heavy rainfall, and humidity, which are common in Fiji.

The roll forming business in Fiji primarily serves industries such as construction, manufacturing, and agriculture. Roll forming involves a continuous bending process where a coil of metal is passed through a series of rollers to produce profiles, such as roofing sheets, wall panels, gutters, and various structural components. Given Fiji's tropical climate and ongoing construction activities, roll forming plays a significant role in providing durable, custom-made profiles for various applications.

Scope of Roll Forming Business in Fiji:

1. Construction Sector:

- Roofing and Wall Panels: Roll-formed roofing sheets and wall panels are widely used in both residential and commercial buildings. These profiles, made from materials like Aluzinc, Galvanized Steel, or Colorbond, are durable and resistant to corrosion, making them ideal for Fiji's humid, coastal climate.

- Structural Components: Roll forming also provides a variety of structural components such as purlins, battens, and C-channels used in building frameworks.

2. Agricultural and Industrial Uses:

- Sheds and Storage: Roll-formed steel is often used for agricultural sheds, storage units, and warehouses, where strength, durability, and cost-effectiveness are key considerations.

- Gutters and Downspouts: Roll forming is also used for manufacturing customized gutter systems, which are crucial for managing heavy rainfall, common in Fiji.

3. Automotive and Other Manufacturing:

- While roll forming is not as prevalent in automotive manufacturing in Fiji, there is potential for using roll-formed steel profiles in parts for light industrial and manufacturing equipment.

4. Energy and Infrastructure Projects:

- With ongoing infrastructure development in Fiji, roll-formed steel profiles are used in the construction of windbreaks, fencing, and even solar panel mounting systems, which are becoming increasingly popular in the region.

Common Materials Used in Roll Forming in Fiji:

1. Galvanized Steel (GI):

- Galvanized steel is the most commonly used material for roll forming in Fiji due to its cost-effectiveness and ability to resist corrosion. It is often used for roofing panels, gutters, and structural components.

2. Aluzinc Steel (55% Aluminum-Zinc Coated Steel):

- Aluzinc (or Galvalume) is increasingly popular due to its superior corrosion resistance, particularly in coastal regions like Fiji. It is often used for roofing, cladding, and wall panels.

3. Colorbond Steel:

- Colorbond is a branded version of pre-painted steel that is often used for roofing and cladding in the construction industry. Its availability in various colors and coatings for additional weather resistance makes it a preferred choice for aesthetic and functional purposes.

4. Pre-painted Steel:

- Steel that is coated with a layer of paint during manufacturing, providing both aesthetic appeal and additional weather protection. Pre-painted steel is often used in commercial and residential construction for roofing, wall panels, and facades.

5. Stainless Steel:

- While less common, stainless steel may be used for specialized applications where superior corrosion resistance and aesthetic appeal are needed, such as in high-end architectural applications.

6. Copper and Aluminum:

- Aluminum is used for roll-formed gutters, roofing systems, and architectural panels due to its lightweight and resistance to corrosion.

- Copper may also be used in certain high-end applications for its durability and distinctive appearance.

Challenges and Opportunities in Fiji's Roll Forming Market:

- Raw Material Sourcing: The availability of raw materials like Aluzinc, Colorbond, and galvanized steel is somewhat reliant on international supply chains. However, local suppliers are growing, and imports from countries like Australia and New Zealand are common.

- Climate Considerations: Fiji’s tropical, humid climate means that corrosion-resistant materials like Aluzinc and Colorbond are in high demand, creating a steady market for roll-formed products.

- Construction Boom: With ongoing infrastructure development and the rising demand for residential and commercial buildings, there is significant potential for growth in the roll forming business, particularly for roofing and structural materials.

In summary, the roll forming industry in Fiji has considerable scope, particularly in the construction and agricultural sectors, with materials like galvanized steel, Aluzinc, Colorbond, and stainless steel being commonly used. The sector will likely continue to grow with increasing demand for durable, corrosion-resistant building materials suited to the local climate.

Australian Standard AS1397