Contact Platform Support
Help CenterHot Dipped Galvanized Coil Anti-Corrosion GI Steel Coil For Roofing Metal Sheet Raw Material
Product Spotlights
Related Products
-
Prepainted Hot Rolled Galvanized Steel Coil GI Color Coated Building MaterialNegotiableMOQ: 100 Kilograms -
Structural Galvanized Steel Angle Coil Commercial Grade for Road ConstructionNegotiableMOQ: 100 Kilograms
-
PPGI Prepainted Galvanized Steel Coil and Galvalume Color Coated Sheet OptionsNegotiableMOQ: 100 Kilograms
-
Factory Direct Galvanized Coil Multiple Zinc Weight Options Building Engineering MaterialNegotiableMOQ: 100 Kilograms
-
Hot Rolled 316L Stainless Steel Plate No.1 Finish Pickled Annealed for Petrochemical Tank FabricationUS$ 1.15 - 3.25MOQ: 100 Kilograms
Wuxi Yansheng Technology Co., Ltd. is a specialized manufacturer of high-quality hot-dipped galvanized steel coils, proudly serving the global construction and roofing industry since 2017. With a factory size of 1,000-3,000 square meters and a dedicated team of 101-200 professionals, we have built a reputation for delivering anti-corrosion GI steel coils that serve as the ideal raw material for roofing metal sheets. Our products are designed to withstand harsh environments while providing long-lasting performance, making them the preferred choice for architects, contractors, and sheet metal processors worldwide.
The hot-dipped galvanizing process ensures a uniform, durable zinc coating that bonds metallurgically with the steel base, offering superior corrosion resistance compared to electro-galvanized products. Whether you need coils for residential roofing, commercial cladding, or industrial building panels, our GI steel coils deliver consistent mechanical properties and excellent formability, allowing easy roll-forming, stamping, and bending.
We supply coils with a wide range of specifications, including thicknesses from 0.12mm to 4.0mm, widths from 600mm to 1500mm, and zinc coating weights from 40g/m² (Z40) to 275g/m² (Z275). Our products are available with optional surface treatments such as passivation, oiling, anti-fingerprint, and skin-pass, ensuring compatibility with various downstream applications. Each coil is tightly packed for export, meeting international shipping standards from China's major ports including Tianjin, Shanghai, Qingdao, and Ningbo.
Product Features & Technical Specifications
- Exceptional Corrosion Resistance: The hot-dipped galvanized layer provides cathodic protection, preventing rust even when the coating is scratched.
- Excellent Formability: Low carbon steel base (SPHC, DX51D, etc.) allows deep drawing and bending without cracking.
- Uniform Coating: Advanced Galvalume (if applicable) and galvanizing lines ensure consistent thickness and adhesion.
- Customizable Dimensions: Thickness, width, and coil weight can be tailored to your production needs.
- Surface Options: Choose from regular spangle, minimized spangle, zero spangle, and extra smooth finishes.
- Eco-Friendly Process: Our manufacturing complies with environmental standards, producing minimal waste.
| Parameter | Range | Notes |
|---|---|---|
| Steel Grade | SPHC, SPHD, DX51D, DX52D, SGC340, SGC440, etc. | Available upon request |
| Thickness Tolerance | ±0.02mm for 0.12-0.5mm; ±0.05mm for 0.5-2.0mm | ASTM A653 / JIS G3302 standard |
| Width Tolerance | ±1mm for width ≤1200mm; ±2mm for wider sizes | Custom tolerance negotiable |
| Coil Inner Diameter | 508mm or 610mm | Standard option |
| Coil Weight | 3-8 tons per coil (custom) | To fit your production line |
Our coils come with a mill test certificate and can be supplied with third-party inspection reports from SGS, BV, or other accredited agencies upon request. This ensures complete traceability and quality assurance for your projects.
Advantages for Your Business
- Reliable Supply Chain: As a manufacturer with an annual export value exceeding US$50 million, we have the capacity to fulfill large-volume orders on time.
- Cost-Effective: Direct factory pricing eliminates middlemen, offering you competitive prices without compromising quality.
- Global Shipping Expertise: We export to North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East, with flexible port choices (Tianjin, Shanghai, Qingdao, Ningbo).
- Technical Support: Our experienced team provides pre-sales and after-sales assistance, including material selection advice and production troubleshooting.
- Customization: From special width to unique surface treatments, we work closely with clients to develop the perfect coil specification for their roofing line.
Trustworthiness & Company Background
Wuxi Yansheng Technology Co., Ltd. has grown rapidly since 2017, now employing 101-200 skilled workers in a 1,000-3,000 sqm facility. Our annual export value of US$50-100 million reflects strong market acceptance across diverse regions including North America, Europe, Asia, and Africa. We hold multiple management system certifications such as ISO9001 and ISO14000, demonstrating our commitment to quality and environmental responsibility. Additionally, we adhere to occupational health and safety standards (OHSAS18001) and social accountability (SA8000), ensuring ethical production practices. Every coil is produced under rigorous quality control, from raw material inspection to final packaging. When you choose our hot-dipped galvanized coil, you are partnering with a manufacturer that prioritizes long-term reliability and customer satisfaction. Contact us today for a quote or sample to experience the difference.
Frequently Asked Questions
Q1: What is the difference between hot-dipped galvanized (GI) and electro-galvanized (EG) coil?
A: Hot-dipped galvanized coil has a thicker, more durable zinc coating (typically 40-275g/m²) that provides superior corrosion resistance and is suitable for outdoor roofing. Electro-galvanized coil has a thinner, more uniform coating (usually ≤20g/m²) and is better for indoor or light-duty applications. Our product is GI, ideal for roofing metal sheets.
Q2: Can I get small width or custom thickness for my roofing sheet production?
A: Yes, we offer customizable thickness from 0.12mm to 4.0mm and width from 600mm to 1500mm. Minimum order quantity may apply for non-standard sizes; please contact our sales team for details.
Q3: How do you prevent the coils from rusting during sea transportation?
A: Our coils are treated with passivation and oiling (optional) to protect against white rust. They are then wrapped with moisture-proof paper, plastic film, and steel strips, packed in seaworthy wooden boxes or beehive crates, ensuring safe transit even in humid marine environments.
Q4: What certifications do your products have?
A: Our factory is certified with ISO9001 (quality management), ISO14000 (environmental management), OHSAS18001 (health & safety), and SA8000 (social accountability). Additional test reports from third-party agencies like SGS or BV can be arranged upon request.
Q5: Do you supply coils for Zinc-Aluminum-Magnesium (ZAM) coated steel?
A: At present, our main product is standard hot-dipped galvanized (GI) coil. We also offer Galvalume (GL) coils upon request. For special coatings, please inquire about availability.
Q6: What is the typical lead time for an order?
A: For standard specifications (e.g., 0.5mm thickness, 1000mm width, Z180 coating), production takes about 15-20 working days for a 20-ft container order. Custom specifications may require 20-30 days. We also keep some fast-moving stock for urgent orders.
Q7: How can I get a sample before placing a bulk order?
A: We provide free samples (300mm x 300mm) for quality evaluation. You only need to cover the shipping cost. Please provide your address and we will arrange the sample with our test certificate.
Q8: What are your payment terms?
A: Common payment terms include T/T (30% deposit, balance before shipment) and L/C at sight. For long-term cooperation, we may offer more flexible terms on a case-by-case basis.
Send Inquiry to This Supplier
You May Also Like
-
Medical Grade Hot Cold Rolled Stainless Steel Sheet 304 304L 316L With 2B BA No.1 No.4 8K FinishUS$ 1.15 - 3.25MOQ: 100 Kilograms
-
304 316L 317 2205 Duplex Stainless Steel Plate 4x8 2B BA 8K Finish Hot Cold RolledUS$ 1.15 - 3.25MOQ: 100 Kilograms
-
Stainless Steel Plate 201 304 316L 430 904L 2205 With 2B BA No.4 8K No.1 Finish Hot Cold RolledUS$ 1.15 - 3.25MOQ: 100 Kilograms
-
Hot Rolled 304 304L 201 316L 317L Stainless Steel Sheet No.1 Surface Duplex Plate for CuttingUS$ 1.15 - 3.25MOQ: 100 Kilograms
-
430 Stainless Steel Plate Hot Rolled Cold Rolled Sheet and Coil for Kitchen AppliancesUS$ 1.15 - 3.25MOQ: 100 Kilograms
-
High Strength Duplex 2205 Hot Rolled Stainless Steel Plate Anti-Acid Marine Engineering PlateUS$ 1.15 - 3.25MOQ: 100 Kilograms
-
Pickled Finish Hot Rolled Stainless Steel Plate Wear Resistant Machinery Processing PlateUS$ 1.15 - 3.25MOQ: 100 Kilograms
-
Hot Rolled Checkered Steel Plate Ss400 A36 Corten 304 Wear Resistant for Industrial FlooringUS$ 1.15 - 3.25MOQ: 100 Kilograms
-
Hot Rolled 316L Polished Stainless Steel Plate for Decorative Architecture ConstructionUS$ 1.15 - 3.25MOQ: 100 Kilograms
-
Cold Rolled 430 Stainless Steel Sheet With HL Hairline Finish for Elevator PanelsNegotiableMOQ: 100 Kilograms
