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Help Center20μm Top Coat Color Coated Corrugated Sheet With Anti-Corrosion Primer for Industrial Use
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As a leading manufacturer based in Liaocheng, Shandong, China, Hemaokang Steel (Shandong) Co., Ltd. specializes in producing high-quality steel products for global industrial applications. Our 20μm Top Coat Color Coated Corrugated Sheet with Anti-Corrosion Primer is engineered to deliver superior durability and corrosion resistance, making it an ideal choice for demanding industrial environments. With an annual export value exceeding US$50 million and ISO9001 certification, we ensure every sheet meets rigorous quality standards.
This product combines a robust anti-corrosion primer layer with a 20μm thick top coat, providing excellent protection against rust, weathering, and chemical exposure. The corrugated profile enhances structural strength, allowing for longer spans and reduced framing requirements. Whether you need roofing, wall cladding, or partition panels, this sheet offers a reliable and cost-effective solution.
Key Features & Benefits
- 20μm Top Coat – Provides a thick, durable finish that resists UV fading, chalking, and chipping, ensuring long-lasting aesthetics.
- Anti-Corrosion Primer – A specialized primer layer applied before the top coat significantly enhances corrosion resistance, especially in humid or chemical-laden environments.
- Corrugated Profile – The wave-like shape increases rigidity and load-bearing capacity, ideal for industrial roofs and walls subjected to high winds or snow loads.
- Wide Color Options – Available in a variety of RAL colors; custom colors can be produced upon request to match project specifications.
- Customizable Dimensions – Widths from 900mm to 1250mm and lengths up to 12 meters (or as required) allow flexible installation.
- Easy Installation – Lightweight yet strong, the sheets can be quickly fixed with standard fasteners, reducing labor costs.
- Low Maintenance – The smooth coated surface resists dirt and can be easily cleaned, reducing ongoing maintenance expenses.
- Eco-Friendly – Manufactured using non-toxic paints and recyclable steel, contributing to sustainable building practices.
Technical Specifications
| Base Material | Hot-dip Galvanized Steel (DX51D / DX52D) |
| Top Coat Thickness | 20 μm (standard) |
| Primer Thickness | 5–10 μm (anti-corrosion type) |
| Total Coating Thickness | 25–30 μm |
| Sheet Thickness (Steel) | 0.3 – 0.8 mm (customizable) |
| Corrugation Pitch | 76 mm / 125 mm standard |
| Effective Width | 900 – 1250 mm |
| Length | Up to 12,000 mm (custom) |
| Color Options | Red, Blue, White, Grey, Green, etc. (RAL chart) |
| Certification | ISO9001:2015 |
Ideal Applications
- Industrial factory roofing and wall cladding
- Warehouse and logistic center envelopes
- Agricultural buildings (sheds, barns)
- Prefabricated steel structures
- Canopies and carports
- Modular construction projects
With Hemaokang Steel, you benefit from a reliable supply chain and professional technical support. Our team of 51–100 experienced employees ensures consistent product quality, and our extensive export network spans North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. We have delivered millions of tons of steel products to customers worldwide, backed by our ISO9001-certified manufacturing processes.
We also offer flexible packaging options (waterproof paper, steel pallets, etc.) and fast delivery times. Contact us today for a quotation or to request free samples. Let our 20μm top coat color coated corrugated sheet with anti-corrosion primer secure your next industrial project.
Frequently Asked Questions
Q1: What is the main advantage of the 20μm top coat compared to thinner coatings?
A: A 20μm top coat provides enhanced durability, better UV resistance, and longer color retention. It also offers improved scratch and impact resistance, making it suitable for industrial environments where the sheet may be exposed to handling or minor abrasion.
Q2: Can this product be used in outdoor coastal areas with high salt mist?
A: Yes, the anti-corrosion primer layer is specifically designed to resist salt spray and moisture. For extremely aggressive environments, we recommend selecting a thicker galvanized substrate (e.g., Z275) and our optional additional protective coating. Please consult our technical team for specific recommendations.
Q3: What colors are available, and can I get a custom color?
A: We offer a wide range of standard RAL colors, including white, red, blue, grey, and green. Custom colors are available upon request with a minimum order quantity. Simply provide the RAL code or a color sample, and we will match it.
Q4: How do you ensure the coating does not peel or delaminate over time?
A: Our manufacturing process includes strict quality control of the zinc coating, primer application, and top coat curing. We use high-quality polyester or PVDF-based paints (optional) and perform adhesion tests per ASTM standards. The sheet is also pre-treated with a chemical conversion coating to enhance bond strength.
Q5: What is the minimum order quantity (MOQ) for this product?
A: Typically, the MOQ is 50 tons for standard colors and sizes. For custom colors or special dimensions, the MOQ may be higher. We also accept trial orders for small quantities to evaluate quality. Please contact our sales team for details.
Q6: How long is the lead time for a typical order?
A: For standard products, the lead time is approximately 15–25 working days after receiving the deposit. For custom orders, it may extend to 30–35 days depending on the complexity. We can expedite production for urgent projects upon request.
Q7: Do you provide free samples for testing?
A: Yes, we offer free samples (A4 size or small panel) for customers to evaluate the coating quality, color, and thickness. The buyer pays the shipping cost, which is refundable upon placing a formal order. Contact us to arrange sample delivery.
Q8: Is this sheet suitable for roofing in areas with heavy snowfall?
A: The corrugated profile provides excellent load-bearing capacity. However, for heavy snow areas, we recommend using a thicker steel substrate (e.g., 0.6mm or 0.8mm) and a steeper roof pitch. Our engineering team can provide load calculations based on your specific site conditions.
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