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Help CenterPre Coated Galvanized Steel Coil With Mill Test Report and 1 Year Warranty
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Hemaokang Steel (Shandong) Co., Ltd. is a trusted manufacturer and exporter of high-quality Pre Coated Galvanized Steel Coil. With an annual export value exceeding US$50 million and a strong presence across 6 continents, we deliver products that meet the rigorous demands of global construction, roofing, and industrial applications. Our pre-coated galvanized steel coils combine the strength of a galvanized substrate with a durable, color-rich coating, offering superior corrosion resistance and aesthetic appeal. Each coil is accompanied by a Mill Test Report and backed by a 1-year warranty, ensuring you receive a product that is both reliable and traceable.
Our coils are manufactured using advanced coating lines that apply a uniform layer of paint (polyester, SMP, or PVDF) onto hot-dip galvanized steel. This process creates a bond that resists chipping, peeling, and fading, even in harsh environments. Available in a wide range of colors and thicknesses, our pre-coated galvanized steel coils are ideal for roofing sheets, wall cladding, metal buildings, and home appliances. Whether you need standard sizes or custom dimensions, we can tailor the product to your project requirements.
Key Features & Benefits
- Superior Corrosion Resistance: The galvanized zinc layer provides a first line of defense, while the outer paint coating adds extra protection against moisture, UV rays, and chemicals.
- Excellent Adhesion & Flexibility: The pre-coating process ensures the paint adheres tightly to the metal, allowing the coil to be bent, cut, or formed without cracking.
- Color Consistency & Aesthetics: Our advanced production lines maintain uniform color across the entire coil, with a smooth finish that enhances the appearance of any building.
- Mill Test Report Included: Every shipment comes with a detailed MTR showing chemical composition, mechanical properties, and coating thickness, giving you full traceability.
- 1-Year Warranty: We stand behind the quality of our coating. If any defect (e.g., peeling, blistering) occurs within one year under normal use, we offer free replacement or refund.
- Customizable Options: Choose from multiple coating types (Polyester, SMP, PVDF), thicknesses from 0.12mm to 2.0mm, widths from 600mm to 1500mm, and any RAL color.
Technical Specifications
| Parameter | Value |
| Base Metal | Hot-dip Galvanized Steel (DX51D+Z, DX52D+Z, etc.) |
| Coating Types | Polyester, Silicon Modified Polyester (SMP), Polyvinylidene Fluoride (PVDF) |
| Thickness Range | 0.12 mm – 2.0 mm (custom tolerance ±0.01mm) |
| Width Range | 600 mm – 1500 mm (custom tolerance ±2mm) |
| Coil Inner Diameter | 508 mm / 610 mm (standard) |
| Coil Weight | 3 – 8 tons per coil (customizable) |
| Color Options | Any RAL color, including metallic & textured finishes |
| Zinc Coating Weight | 60 – 275 g/m² (Z60 – Z275) |
| Standard Compliance | JIS G3312, ASTM A755, EN 10169 (available upon request) |
| Certification | ISO9001:2015 |
Why Choose Hemaokang Steel?
With over 50 years of combined industry experience, our team of 51–100 dedicated professionals ensures that every coil meets the highest standards of quality. We have exported to more than 30 countries, including the USA, Germany, Brazil, South Africa, and Australia. Our ISO9001 certified factory runs strict quality control checks at every stage – from raw material inspection to final packaging. The Mill Test Report provided with each order gives you complete confidence in the product's composition and performance. Combined with a 1-year warranty, you can purchase risk-free. We also offer flexible payment terms, fast delivery (usually 15–25 days after deposit), and dedicated after-sales support. Whether you need a small trial order or a full container, we are ready to serve you.
Frequently Asked Questions
1. What is the difference between pre-coated galvanized steel coil and regular galvanized steel coil?
Pre-coated galvanized steel coil has an additional layer of paint applied on top of the zinc coating, offering enhanced corrosion resistance, aesthetic color options, and better durability in outdoor applications. Regular galvanized steel has only the zinc layer.
2. What types of coatings are available, and which one should I choose?
We offer polyester (standard, good for indoor), SMP (better durability, suitable for outdoor), and PVDF (premium, excellent for extreme environments). Our sales team can help you select the best coating based on your climate and application.
3. Does the 1-year warranty cover all defects?
The warranty covers coating defects such as peeling, blistering, or excessive chalking under normal use conditions. It does not cover damage caused by improper installation, mechanical abuse, or exposure to harsh chemicals beyond normal environmental conditions.
4. Can I get a sample before placing a bulk order?
Yes, we provide free samples (you pay shipping cost) of approximately 10cm x 10cm in your chosen color and thickness. Bulk orders can be arranged after sample approval.
5. What is the minimum order quantity (MOQ)?
Our standard MOQ is 1 ton per color/size, but we can accept smaller trial orders for first-time customers. Please contact us for details.
6. How long does delivery take?
Typically 15–25 days after receiving your deposit and finalizing the specifications. For urgent orders, we can expedite to 10–15 days depending on stock availability.
7. Do you provide Mill Test Reports for every coil?
Yes, every coil is accompanied by a Mill Test Report showing chemical composition, mechanical properties, zinc coating weight, and paint thickness. This is a standard part of our quality assurance process.
8. How do you ensure the color consistency across different batches?
We use spectrophotometers to measure color values during production and maintain a strict color standard. In case of multi-batch orders, we can produce all coils from the same production run to minimize color variation.
Contact us today for a quote or technical consultation. With Hemaokang Steel, you get quality, transparency, and service you can rely on.
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