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Help CenterPre-Painted Galvanized Steel Coil For Roofing Panels 0.35mm 1200mm Width 20 Years Outdoor Durability
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Hemaokang Steel (Shandong) Co., Ltd. is proud to offer our Pre-Painted Galvanized Steel Coil for Roofing Panels, designed to deliver exceptional performance and long-lasting aesthetics. With a thickness of 0.35mm and a width of 1200mm, this coil is specifically engineered for roofing applications that require 20 years of outdoor durability. Our steel coil is manufactured under strict ISO9001 quality management, ensuring consistent quality and reliability. As a trusted supplier with annual export value exceeding US$50 million, we serve global markets including North America, South America, Europe, and Asia.
This product combines the strength of galvanized steel with a high-quality pre-painted coating, offering excellent corrosion resistance, UV stability, and color retention. Whether you are producing roofing panels for residential or commercial buildings, our coil provides a cost-effective solution without compromising on performance. The advanced painting process ensures a uniform finish that withstands harsh weather conditions, making it ideal for outdoor use.
Key Features & Benefits
- 20-Year Outdoor Durability: The pre-painted coating is formulated to resist fading, chalking, and peeling for up to two decades under normal outdoor conditions.
- Excellent Corrosion Resistance: The galvanized zinc layer provides a robust barrier against rust, while the paint layer adds extra protection from moisture and chemicals.
- Precise Dimensions: 0.35mm thickness and 1200mm width are optimized for roofing panel production, reducing material waste and ensuring easy handling.
- Customizable Colors: Available in a wide range of RAL colors, gloss levels, and finishes (smooth, embossed, or textured) to match architectural requirements.
- Lightweight & Strong: The steel base offers high tensile strength, while the thin gauge keeps the coil lightweight for transportation and installation.
- Easy Processing: Suitable for roll forming, cutting, and bending without cracking or delamination of the coating.
- Environmentally Friendly: The production process uses eco-friendly paints and recycling methods, and the product itself is fully recyclable at end of life.
Technical Specifications
| Parameter | Value |
|---|---|
| Thickness | 0.35mm ± 0.02mm |
| Width | 1200mm ± 1mm |
| Zinc Coating Weight | 60-180 g/m² (optional) |
| Paint Thickness | 20-30 μm (top coat) + 5-10 μm (back coat) |
| Tensile Strength | 250-350 MPa (depending on grade) |
| Coil Inner Diameter | 508 mm / 610 mm (optional) |
| Coil Weight | 3-5 tons per coil (customizable) |
Our pre-painted galvanized steel coil undergoes rigorous quality control at every stage. The steel substrate is manufactured from high-grade hot-dip galvanized steel, ensuring a uniform zinc layer. The painting process uses advanced reverse roll coating technology, which provides a consistent film thickness and excellent adhesion. The final product is tested for salt spray resistance, UV aging, and flexibility to meet international standards.
Trusted by Global Clients
Hemaokang Steel (Shandong) Co., Ltd. has been serving customers since 2025, with a dedicated team of 51-100 employees and an annual export value of US$50 million to US$100 million. Our products are shipped to North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and many other regions. We hold ISO9001 certification, which reflects our commitment to quality management and continuous improvement.
We understand that roofing projects demand reliable materials. That’s why our Pre-Painted Galvanized Steel Coil is backed by years of industry experience and a customer-centric approach. We offer free samples, technical support, and flexible packaging options (including eye-to-wall and eye-to-sky). With competitive pricing and timely delivery, we aim to be your long-term partner in steel.
Why choose Hemaokang? Our factory is located in Liaocheng, Shandong, a major steel production hub in China. We source raw materials from top-tier mills and maintain strict quality control. Our experienced sales team provides prompt quotations and after-sales service. Whether you need a small trial order or a large container shipment, we are ready to support you.
Contact us today to request a quote or to discuss your specific requirements. Let our Pre-Painted Galvanized Steel Coil add value to your roofing panel manufacturing.
Frequently Asked Questions (FAQ)
1. What is the minimum order quantity (MOQ) for this coil?
Our MOQ is typically 1 ton per color, but we can accommodate smaller trial orders for new customers. Please contact our sales team for details.
2. Can you provide custom colors and coatings?
Yes, we offer a wide range of RAL colors and custom gloss levels. We also have special coatings like anti-fingerprint, anti-static, and PVDF (upon request).
3. How is the 20-year outdoor durability achieved?
The combination of a thick galvanized layer (up to 180 g/m²) and a high-quality polyester or fluorocarbon paint system ensures resistance to UV radiation, moisture, and temperature fluctuations. Our products have been tested in accelerated weathering chambers to simulate 20 years of exposure.
4. Is this coil suitable for marine environments or coastal areas?
Yes, we can recommend a higher zinc coating weight (e.g., 180 g/m²) and a more durable paint system (e.g., SMP or PVDF) for coastal or corrosive environments. Please advise your specific conditions.
5. What is the typical lead time?
For standard sizes and colors, lead time is 15-20 days after order confirmation. For customized colors, it may be 20-30 days. We also offer express delivery for urgent orders.
6. Do you provide samples before bulk order?
Yes, we provide free A4-sized samples (shipping cost is covered by the customer). Samples can be cut from actual production coils to show the exact color and finish.
7. Can this coil be used for both roofing and wall cladding?
Absolutely. The 0.35mm thickness is suitable for both roofing panels and wall cladding applications. For wall panels, you may also consider our 0.4mm-0.6mm options.
8. How do you ensure the quality of the coating?
Every coil is tested for thickness, adhesion, hardness, and salt spray resistance. We also conduct T-bend and impact tests to ensure the coating does not crack during forming. Our ISO9001 system ensures traceability and consistency.
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