Welcome to Authentic Steel – Your Premier China Steel Manufacturer & Global Supplier
As the specialized international export department of Winroad Group established in 1994, Authentic Steel has built a robust global reputation as one of the most trusted galvanized steel coil manufacturers in China. Strategically situated near the major international shipping hub of Tianjin Port, our company integrates advanced in-house manufacturing capabilities with strategic supply chain partnerships with China’s premier state-owned steel conglomerates, including Baosteel, Rizhao, HBIS, Yanshan Steel, Anfeng, and Zongheng. Over decades of dedicated service, our sales and distribution network has successfully expanded to cover overseas clients in 78 countries and regions worldwide.
Our core production and export portfolio is designed to meet the rigorous demands of modern construction, automotive manufacturing, home appliance production, and steel structure engineering. We specialize in supplying high-performance cold rolled steel coils, hot-dipped galvanized coils, galvalume (aluzinc) coils, prepainted color-coated steel coils (PPGI/PPGL), zinc-aluminum-magnesium (ZAM) coils, and corrugated roofing sheets. Whether you are looking for mill-direct GI coil wholesale programs or custom-slitted steel strips, Authentic Steel guarantees superior metallurgical performance, strict dimensional accuracy, and exceptional corrosion resistance.
High-Quality Galvanized Steel Coil & Sheet | Direct Factory Supply
Professional Galvanized Steel Solutions Engineered for Global Markets
As a prominent leader among hot dipped galvanized steel suppliers, Authentic Steel operates state-of-the-art continuous hot-dip galvanizing production lines that deliver exceptional surface uniformity, superior coating adhesion, and outstanding anti-corrosion longevity. Our galvanized products are widely utilized across international markets for roofing construction, wall cladding, HVAC ductwork, automotive body panels, and purlin manufacturing.
Thickness Range: 0.1mm – 3.5mm, engineered to accommodate precise structural tolerances and customer specifications.
Width Range: 870mm – 1250mm, with flexible slitting capabilities to produce custom-width steel strips.
Zinc Coating Weight: Heavy and light zinc layers ranging from $30g/m^2$ to $600g/m^2$, tailored to endure harsh marine, industrial, or rural atmospheric conditions.
Coil Dimensions & Weight: 3 – 24 Metric Tons per coil, with standard inner diameters of 508mm or 610mm.
Surface Spangle Options: Big spangle, regular spangle, small spangle, and zero spangle to match aesthetic and functional requirements.
Executive Standards: Manufactured strictly in accordance with international benchmarks including ASTM A653, JIS G3302, and EN 10346.
Mill-Direct Cost Efficiency: By eliminating intermediate trading layers, we offer highly competitive pricing structures for all GI coil wholesale orders, ensuring maximum profit margins for our international distributors and stockists.
Uncompromising Quality Assurance: Every production batch undergoes rigorous mechanical testing (tensile strength, yield strength, elongation) and chemical analysis (zinc layer thickness verification) in our certified in-house laboratories.
Advanced Export Logistics & Packaging: Located near Tianjin Port, we provide rapid inland transportation, professional seaworthy export packaging (waterproof kraft paper, steel strapping, edge protectors, and wooden pallets), and seamless container stuffing to ensure cargo arrives in pristine condition.
Contact our international sales and engineering team today to request a tailored mill-direct quotation, professional technical datasheets, or free product sample kits for your upcoming commercial projects.
