High-grade hot dipped galvanized steel coils refined through our continuous hot-dip thermal lines. Direct mill access from Authentic Steel, an industry leader operating out of Tianjin since 1994. Excellent sacrificial anode action ensures superior edge protection against raw environmental rust.
The performance of hot dipped galvanized steel coils lies within the precision of the thermal bonding process executed at the metallurgical line. At Authentic Steel, the international export division of Winroad Group, our manufacturing infrastructure utilizes a state-of-the-art continuous hot-dip galvanizing process honed since 1994. By passing our precision cold-rolled coils through a controlled chemical pre-cleaning furnace followed immediately by immersion in a 450°C molten zinc bath, we achieve an unbreakable metallurgical bond. This complex zinc-iron alloy interface ensures that our steel can withstand aggressive structural forming and long-term environmental weathering without coating delamination.
We optimize our continuous galvanizing line to handle heavy-duty structural requests as well as thin, flexible light-gauge engineering configurations with equal dimensional precision.
Available Thickness Matrix: Ranging from 0.1 mm up to 3.5 mm, supporting diverse structural load demands.
Coil Width Dimensional Capabilities: Offering precise mill edge or slit edge configurations from 870 mm to 1250 mm.
Zinc Layer Deposition Mass: Scalable from 30 g/m2 for rapid internal applications up to 600 g/m2 for rugged architectural frameworks.
Surface Passivation Varieties: Available with environment-friendly trivalent chromate passivation, oiling, or advanced anti-fingerprint sealants.



The uniform zinc coverage provided across our hot dipped galvanized steel coils functions as an exceptional sacrificial anode system. If the steel surface is scratched or cut during installation, the surrounding zinc naturally Band-Aids the damage, corroding first to seal the exposed carbon base and completely halting the development of structural rust. Our product lines consistently meet global standards including ASTM A653, JIS G3302, and EN 10346, making our coils the core raw material for global infrastructure projects, structural HVAC ducting networks, automated storage silos, and protective automotive heat shields.
Authentic Steel manages your complete B2B supply chain with maximum transparency and safety. Our proximity to the port of Tianjin reduces unnecessary inland handling stresses, keeping our pricing structurally competitive and our transit times highly predictable. Every single coil is wrapped using durable inner steel protections and waterproof synthetic shields to eliminate maritime humidity exposure.
Export Sales Representative: Bella
Official Corporate Email: bella@authsteel.com / bella@wanlusteel.com
Direct Mobile & WhatsApp: +86 189 2041 0870