Authentic Steel is the export department of Winroad Group and a professional manufacturer and exporter of zinc-aluminum-magnesium coated steel coils (ZAM). From our production hub in Tianjin, China, we supply ZAM coils to solar tracker manufacturers, coastal infrastructure engineers, agricultural equipment builders, and steel distributors in 78+ countries. We provide mill-direct pricing, custom processing, and rapid export dispatch through Tianjin Port. Heavy coating ZAM coils are available on request.
According to our company brochure, zinc-aluminum-magnesium steel coils are available with:
Thickness: 0.3–3.5 mm
Width: 870–1250 mm
Coating weight: 30–450 g/m²
Coil weight: 3–24 MT
Coil inner diameter: 508 / 610 mm
Specific coating designations such as ZM120–ZM450 are available on request. Alloy composition, self-healing properties, and service-life claims can be discussed according to your project requirements. Please share your target application, strength requirement, coating weight, and service environment so we can recommend a suitable specification.
Type: Zinc-Aluminum-Magnesium (ZAM) Steel Coil
Thickness: 0.3–3.5 mm
Width: 870–1250 mm
Coating weight: 30–450 g/m²
Coil weight: 3–24 MT
Coil inner diameter: 508 / 610 mm
Surface: regular or as required
Surface treatments: passivated, anti-fingerprint, oiled, or dry available on request
Steel grades: available on request
Standards: EN, ASTM, JIS, GB available on request
Custom slitting and cut-to-length processing: available on request
We support flexible order planning for solar tracker makers, infrastructure contractors, agricultural builders, and distributors. Specifications can be adjusted according to end use, processing method, and destination market requirements.
ZAM coils are suitable for outdoor and demanding environments, including:
Solar PV and renewable energy systems: ground piles, tracker torque tubes, C/U/Z purlins, and fixed mounting racking
Marine and coastal infrastructure: seaport facilities, bridge decking, retaining walls, fencing, and offshore support structures
Agriculture and livestock facilities: farm enclosures, grain silos, greenhouse frames, and feeding systems
Heavy industrial construction: purlins, cable trays, power distribution housings, and chemical plant enclosures
General outdoor structures requiring corrosion protection
Specific performance data and service-life claims are available on request.
Authentic Steel supports custom processing for project-specific requirements:
Precision slitting into narrow ZAM strips
Cut-to-length ZAM sheets
Tension leveling and surface protection
Custom packing and mixed container loading available on request
Every batch undergoes inspection, including coating weight measurement, bend tests, tensile 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 moisture damage, surface oxidation, and coil edge deformation during ocean transport, our ZAM coils use multi-layer export packaging: rust-inhibiting VCI paper, plastic moisture barriers, metallic outer casing, corner protectors, and heavy steel banding on heat-treated wooden 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 slitting and 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, coating weight, surface treatment, and destination port.
AUTHENTIC STEEL
Email: alice@authsteel.com
Mobile / Tel / WhatsApp: +86 137 8227 9845
