Color-coated steel: Price, Standards, and Applications

Color-coated steel is a common building material with many outstanding advantages, such as resistance to oxidation, thermal insulation, sound insulation, and high aesthetic value. In this article, Stavian Industrial Metal will provide information about the price of color-coated steel, its applications in construction, detailed production process, and the benefits of using color-coated steel.

What is Color-Coated Steel?

Color-coated steel, also known as pre-painted steel, is a type of building material manufactured from galvanized steel, coated with an alloy of aluminum-zinc-magnesium, and painted to protect the surface. This color-coating process helps the steel become resistant to oxidation, corrosion and enhances its aesthetic appeal.

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Applications of Color-Coated Steel

Color-coated steel has various applications and is widely used in the construction and industrial sectors. Here are some common applications of color-coated steel:

  • Roofing system: Color-coated steel is the primary material used for roofing houses, warehouses, workshops, and civil structures. Its design flexibility and wide range of color options make it a top choice for roofing systems.
  • Partition walls and barriers: It is also used as a material for partition walls and barriers in industrial and civil constructions. Its thermal and sound insulation properties create better working conditions in warehouses, storage areas, or loading docks.
  • Advertising billboards: Color-coated steel is commonly used as the main material for large outdoor advertising billboards. Its resistance to oxidation and durability help maintain brightness and stable colors over time, creating professional and eye-catching advertising billboards.
  • Other industrial and construction projects: Color-coated steel is applied in various industrial constructions, such as factories, plants, ports, airports, export processing zones, and building projects like pre-engineered steel buildings, workshops, gas stations, toll booths, and water pipelines.
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Benefits of Color-Coated Steel

Oxidation and corrosion resistance: With its aluminum-zinc-magnesium alloy and color coating, color-coated steel has the ability to resist oxidation and corrosion, protecting it from the impact of water, air, and corrosive elements.
High durability and long lifespan: Color-coated steel has high durability and a long lifespan, prolonging the usage time of constructions and reducing maintenance and replacement frequency.
Thermal and sound insulation: Color-coated steel has thermal insulation properties, helping to keep the interior of constructions cooler on hot sunny days and warmer in winter. At the same time, it also provides sound insulation, reducing noise from the outside and creating a quiet and comfortable working environment.
Easy installation and maintenance: Color-coated steel is lightweight and can be easily cut and bent according to the construction requirements, saving time and installation costs. Additionally, maintaining color-coated steel is simple and cost-effective.
High aesthetic value: Color-coated steel comes in a variety of colors and smooth surfaces, enhancing the aesthetic beauty of construction projects.

By combining corrosion resistance, thermal insulation, sound insulation, and aesthetic appeal, color-coated steel becomes an optimal choice for modern and sustainable construction projects.

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Price of Color-Coated Steel

The price of color-coated steel can vary depending on various factors such as geographical location, suppliers, type of steel, thickness, and size of the steel. Here are some specific factors that affect the price of color-coated steel:

  • Geographical location: The price of color-coated steel may vary in different geographical regions due to transportation costs and other economic factors specific to that area.
  • Suppliers: The number and variety of color-coated steel suppliers also influence the price. If there are many competitive suppliers, the price of color-coated steel may be competitive and reduced.
  • Types: Color-coated steel comes in various types with different properties and advantages. Premium types with special features may have higher prices compared to regular types.
  • Thickness and size of the steel: The weight of color-coated steel varies with its thickness and size. Thicker or larger sheets usually have higher prices.
  • Quantity of purchase: Buying a large quantity of color-coated steel often leads to discounts and preferential prices from suppliers.
  • Quality of steel: The quality of color-coated steel also affects its price. High-quality color-coated steel that meets strict quality standards is generally more expensive.
  • Market conditions: Supply and demand conditions in the color-coated steel market also impact the price. If the market has high demand and limited supply, the price of color-coated steel may increase.

For detailed price information, readers can contact Stavian Industrial Metal directly.

Production Process of Color-Coated Steel

The production process of color-coated steel is complex and rigorous, involving several steps from raw material preparation to the final product. Below are the main steps in the production process of color-coated steel:

  1. Preparation of raw materials: The process begins with preparing the main raw material – galvanized steel sheets. Galvanized steel is a type of steel with a zinc coating that protects its surface and prevents corrosion.
  2. Forming the steel sheets: The galvanized steel is then shaped into color-coated steel sheets through cutting, bending, and roll forming processes. The sheets can be produced in various sizes and shapes according to customer requirements.
  3. Galvanization: After forming, the steel sheets undergo the galvanization process. This process involves passing the sheets through a bath of molten zinc to coat the surface with a zinc layer. The zinc coating helps protect the steel from environmental impacts and enhances the durability of color-coated steel.
  4. Color coating the surface: After galvanization, the steel sheets undergo the color coating process. The surface color coating includes an aluminum-zinc-magnesium alloy layer, which further protects the zinc coating and enhances oxidation, UV, and corrosion resistance while providing aesthetic colors to the steel.
  5. Quality inspection: Before packaging and shipment, the color-coated steel sheets undergo thorough quality inspections. This ensures that the products meet the required quality standards and technical specifications before reaching the end users.
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Technology and Equipment Used

The production process of color-coated steel utilizes advanced technology and specialized equipment to ensure high-quality and efficient production. Some common technologies and equipment used include:

  1. Roll forming machines: Used to shape the steel into various sizes and shapes.
  2. Galvanization furnace: Galvanization involves high-temperature treatment to coat the steel with a zinc layer.
  3. Color coating machine: Electrostatic painting technology is used to apply the protective color coating on the steel.
  4. Quality inspection systems: Automated testing equipment ensures that the products meet quality standards and technical requirements.

This process is conducted under strict standards to ensure quality and meet the diverse demands of the market. The combination of advanced technology and rigorous quality control makes color-coated steel a reliable and popular building material in the current market.

Standards and Specifications of Color-Coated Steel

Adhering to quality standards is essential in the production process of color-coated steel to ensure that the products meet technical and safety requirements. Below are some important quality standards in the production and use of color-coated steel:

  1. Chemical composition standards: The chemical composition of the color coating and zinc coating needs to comply with clearly defined standards to ensure stability and reliability of the product.
  2. Coating thickness standards: The thickness of the zinc and color coatings on the surface of the steel should meet defined standards to ensure oxidation resistance, UV resistance, and durability of color-coated steel.
  3. Strength and elongation standards: Color-coated steel products must have high strength and elongation to withstand external forces, ensuring the steel’s aesthetic appeal and structural stability.
  4. Color and Light Standard: The color must ensure accuracy and uniformity, with no significant color changes or defects when exposed to light.
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Color Coated Steel Specifications

The size and thickness specifications of color-coated steel depend on the type of steel and the requirements of each construction project. Below are some important parameters to consider in color-coated steel specifications:

  1. Sheet Size: The size specifications of color-coated steel sheets are typically determined based on the width and length of the sheet. Common widths include 800mm, 900mm, 1000mm, and 1200mm, while lengths range from 1800mm to 6000mm.
  2. Steel Thickness: The thickness of color-coated steel is usually measured in millimeters (mm). Common thicknesses for color-coated steel range from 0.15mm to 1.0mm. Specific technical projects may require specific thicknesses.
  3. Wave Profile: Color-coated steel comes in various wave profiles, such as trapezoidal, V-shaped, U-shaped, and arched waves. The choice of wave profile depends on the load-bearing requirements and aesthetics of the project.
  4. Sheet Length: The length of color-coated steel sheets can be cut into multiple small sections or supplied in coil form ranging from 50m to 150m. The sheet length depends on the needs and convenience of each construction project.

Compliance with the specified size and thickness specifications is essential to ensure the durability and safety of color-coated steel during use. Selecting the appropriate specifications for color-coated steel will optimize the efficiency and performance of construction projects.

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Calculating the Weight of Color-Coated Steel

Way to determine the weight of color-coated steel per square meter (m2)

To determine the weight of color-coated steel per square meter (m2), the weight can be calculated based on the sheet’s area and its thickness. The general formula to calculate the weight of color-coated steel per area is as follows:

Weight (kg) = Area (m2) × Thickness (mm) × Density of Color Coated Steel (kg/m2/mm)

The density of color-coated steel (kg/m2/mm) is usually provided by the manufacturer or can be found in the technical documentation of color coated steel.

For example, if we have a color-coated steel sheet with an area of 1m2 and a thickness of 0.5mm, and the density is 7.85 kg/m2/mm, then the weight of the sheet will be:

Weight = 1m2 × 0.5mm × 7.85 kg/m2/mm = 3.925 kg

Calculating the Number of Sheets Based on Weight

Sometimes, users may need to calculate the number of color-coated steel sheets based on the specific weight (kg) they want to use. To calculate the number of sheets based on weight, use the following formula:

Number of Sheets = Weight (kg) ÷ Thickness (mm) ÷ Area (m2)

For example, if a user wants to purchase 100kg of color-coated steel with a thickness of 0.4mm, and the density of color-coated steel is 7.85 kg/m2/mm, then the number of sheets needed will be:

Number of Sheets = 100kg ÷ 0.4mm ÷ 7.85 kg/m2/mm ≈ 32 sheets

Note that in the calculation process, it is necessary to take the integer part of the result to round up the number of color-coated steel sheets to be purchased.

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Color-coated steel is an excellent choice for construction projects, meeting various requirements for sustainability and high applicability. Through this article, we have learned about pricing, diverse applications, modern production processes, and the superior benefits of this material. To ensure efficiency and cost savings in using color-coated steel, users need to understand quality standards, specifications, and choose reliable suppliers.

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Stavian Industrial Metal Joint Stock Company


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