The base material in color coated steel consists of steel, coated with a thin zinc layer. The steel is chosen with properties that will best suit the end product. For structural steel applications this follows standardized mechanical properties according to EN . For applications where the steel should be formable in a demanding way or the product should be worked with by tinsmiths, extra formable steels are used.
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The zinc coating protects the steel from corrosion in two ways. It is a protective layer keeping oxygen and water away from the steel, but it also acts as a cathodic protection. This means that at cut edges or in case of damages through the zinc coating, the zinc will sacrifice itself and react to form protective compounds andblock further corrosion processes.
The zinc coating is measured in weights per square meter and covers the steels on both sides.
The pre-treatment layer is applied to further improve the corrosion resistance, but also to give a good adhesion to the coating layer.
The primer layer is used for corrosion protection with corrosion protective additives and also acts to give a good adhesion to the top coat.
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The top coat type is chosen to best fit the purpose of the application. It can be chosen to serve in different environments and also offer different appearances. This is also the layer that gives the final product its color.
Colour-coated steel refers to thin flat products, typically supplied in roll form and with dimensions of up to about 2 metres width and almost unlimited length. It consists of prepainted metallic surfaces, generally using continuous hot dip galvanising or continuously anodised (CA) substrates, along with other materials to achieve specific mechanical properties and corrosion protection. Here are a few examples showcasing the diverse applications of colour-coated steel across various industries:
I. Building construction
A. Roofing: They provide excellent protection against weather elements such as rain, sunlight, and extreme temperatures in both residential and commercial buildings. The vibrant colours and finishes available in colour-coated steel sheets enhance the visual appeal of the roof.
B. Wall panels: Colour-coated steel sheets are widely used as wall cladding materials in building construction. They can be installed as exterior wall panels, offering insulation along with a decorative touch to the structure.
C. Doors and Windows: They provide a strong and durable framework for these elements, ensuring structural integrity and security in construction of doors and windows.
II. Industrial Applications
A. Factories and Warehouses: Colour-coated steel sheets are widely employed in roofing, wall cladding, and structural components. The durability and weather resistance of colour-coated steel make it suitable for industrial environments, protecting the building against harsh conditions.
B. Container storage yards: Colour-coated steel sheets are extensively utilised in container storage yards, where containers are stacked and stored. These sheets are often employed as roofing or wall cladding for container storage facilities. By using colour-coated steel, they can ensure the longevity of the containers and maintain their structural integrity.
C. Corrosion resistance and durability: Industrial environments are often exposed to corrosive substances, chemicals, and extreme weather conditions. Colour-coated steel sheets are engineered to withstand such conditions and can be used for equipment enclosures, storage cabinets, platforms, walkways, and partitions.
III. Agriculture
A. Animal shelters, waterproofing and strength: Colour-coated steel sheets are commonly used to construct animal shelters such as barns, poultry houses, and stables. These sheets provide a robust and weather-resistant covering that protects animals from the elements.
B. Greenhouses: Colour-coated steel sheets are ideal for constructing greenhouse structures as they provide excellent light transmission while offering protection against UV rays, heat, and moisture. They maintain optimal growing conditions by regulating temperature, enhancing light diffusion, ensuring uniform plant growth and humidity levels inside the greenhouse.
C. Silos and storage structures: Colour-coated steel sheets are commonly used for building silos, warehouses, and storage structures in agriculture. Their corrosion resistance and waterproofing properties ensure the safety and longevity of stored crops, feed, and agricultural equipment.
IV. Transportation
A. Trailers and Containers: The sheets are widely used in the construction of trailers and shipping containers for their corrosion resistance and weatherproofing properties.
B. Truck Bodies: Colour-coated steel sheets offer high strength-to-weight ratios, making them an ideal choice for constructing lightweight yet durable truck bodies. The sheets' resistance to impacts, abrasion, and weather conditions.
C. Railway carriages: These sheets are utilised for their robustness and resistance to corrosion and environmental factors make them suitable for the demanding conditions of railway transportation.
D. Lightweight properties and resistance: By using these sheets, the overall weight of vehicles can be reduced, resulting in improved fuel efficiency and increased payload capacity. The sheets' resistance to corrosion, UV rays, and other weather elements helps the equipment to stay in good condition for extended periods.
V. Renewable Energy
A. Solar panel frames: Colour-coated steel sheets are used in the manufacturing of solar panel frames for support, durability, and weather resistance to the frames.
B. Wind turbine blades: The sheets are employed in the production of wind turbine blades for their strength, lightweight properties, protection against UV radiation and moisture.
C. Battery enclosures: Colour-coated steel sheets are used in the construction of battery enclosures for renewable energy storage systems. They provide robust protection for the batteries, ensuring their safety and longevity. Additionally, the colours can aid in easy identification and organisation of battery banks.
VI. Furniture and Decorations
A. Garden benches and pergolas: Colour-coated steel sheets can be used to construct garden benches and pergolas, providing a durable and weather-resistant seating or shading solution for outdoor spaces.
B. Trellises and decorative panels: Colour-coated steel sheets can be cut and shaped into intricate designs, offering an attractive and versatile way to support climbing plants or create visually appealing partitions.
C. Mailboxes and flower pots: They can be used to manufacture mailboxes and flower pots, combining functionality with decorative elements which can be customised to match the style and theme of the surrounding area.
D. Aesthetic appeal and functional design: Colour-coated steel sheets can be incorporated into furniture designs such as tabletops, cabinet doors, or accents, providing a sleek and modern look.
VII. Signage
A. Signboards, outdoor advertisements and billboards: Colour-coated steel sheets are commonly used for creating signboards and billboards. The sheets provide a sturdy and long-lasting base for displaying information, logos, and graphics.
B. Directional signs: Colour-coated steel sheets are utilised for directional signs, guiding people in various locations such as parks, campuses, or commercial complexes.
C. Outdoor advertisements: Colour-coated steel sheets are ideal for outdoor advertisements such as banners, hoardings, and signage displays because the advertisements remain intact and legible even in harsh environmental conditions.
JSW Pragati+ Pre-Painted Galvalume Coils and JSW Colouron+ Pre-Painted Galvalume Coils are two distinct product offerings that cater to different requirements. In line with the advancing trends in colour coated steel, these products exemplify the industry's commitment to sustainability, advanced technology, and multi-functionality. These trends include a focus on green construction practices, incorporating recycled content and renewable energies. Advancements in material science enable the development of custom blends with unique properties like corrosion resistance and smart capabilities. Additionally, there is a growing demand for multi-functional structures in urban areas, leading to collaborations between steel providers and architects to optimise resource allocation and improve living spaces.
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