Authentic Steel is the export department of Winroad Group and a professional manufacturer and exporter of galvanized steel (GI) sheets. From our production hub in Tianjin, China, we supply zinc-coated flat sheets to structural fabricators, agricultural equipment builders, marine infrastructure contractors, and steel stockists in 78+ countries. We provide mill-direct pricing, custom processing, and rapid export dispatch through Tianjin Port. Our heavy zinc sheets can be supplied to international specifications on request.
According to our company brochure, the standard galvanized steel sheet range is:
Thickness: 0.1–3.5 mm
Width: 870–1250 mm
Length: 1000–12000 mm or as needed
Zinc coating: 30–600 g/m²
Materials: Galvanized / Galvalume / Zn-Al-Mg
Spangle: Big / Regular / Small / Zero Spangle
Heavy zinc coating options such as Z275–Z600 are available on request. Specific grades, surface treatments, and cut-to-length sizes can be discussed according to your project. Please share your target application and service environment so we can recommend a suitable specification.
Thickness: 0.1–3.5 mm
Width: 870–1250 mm
Length: 1000–12000 mm or as needed
Zinc coating: 30–600 g/m²
Spangle: Big / Regular / Small / Zero Spangle
Materials: Galvanized / Galvalume / Zn-Al-Mg
Surface treatment: chromated, oiled, anti-fingerprint, skin-passed, or dry available on request
Steel grades: available on request
Standards: EN, ASTM, JIS, GB available on request
Edge: mill edge or cut edge available on request
Cut-to-length processing: available on request
We support flexible order planning for fabricators, agricultural builders, marine contractors, and distributors. Specifications can be adjusted according to end use, processing method, and destination market requirements.
Heavy zinc coated sheets provide barrier and sacrificial protection for outdoor and humid environments. The zinc coating helps resist moisture and atmospheric exposure, making it suitable for coastal, agricultural, and industrial applications. Specific service-life data is available on request.
Marine and coastal infrastructure: seaport cladding, retaining structures, dock enclosures, and offshore brackets
Agricultural and livestock facilities: grain silos, livestock housing panels, feeding equipment, and greenhouse frames
Power generation and electrical utility: transformer housings, cable trays, distribution enclosures, and solar mounting accessories
Heavy construction and transportation: roof decking, noise barriers, bridge drainage channels, and trailer body panels
General outdoor structures requiring corrosion protection
Every batch undergoes inspection, including zinc coating thickness measurement, bend tests, tensile and yield strength verification, and surface checks. Salt spray corrosion testing is available on request. A Mill Test Certificate (MTC) can be supplied on request, and third-party inspection is available on request.
To reduce white rust, moisture damage, and edge deformation during ocean transport, our heavy zinc sheets use multi-layer export packaging: rust-inhibiting VCI paper, plastic moisture barriers, metallic corner protectors, and high-tensile steel banding on heat-treated wooden pallets or steel skids. This packaging is suitable for long-distance container shipment and safe unloading.
Mill-direct supply and competitive pricing
Stable quality control from raw material to final packing
Export experience to 78+ countries
Custom cut-to-length processing on request
Fast dispatch from Tianjin Port
Technical support, datasheets, and MTC samples available
Contact our engineering sales team for factory-direct quotations, technical datasheets, MTC samples, or custom project quotes. Please share your required thickness, width, length, zinc coating, spangle, surface treatment, and destination port.
AUTHENTIC STEEL
Email: alice@authsteel.com
Mobile / Tel / WhatsApp: +86 137 8227 9845
