Authentic Steel specializes in manufacturing heavy-duty high coating Aluzinc steel coils (high-AZ Galvalume coils) featuring continuous hot-dip 55% Aluminum-Zinc alloy coatings from AZ150 to AZ180. Specifically engineered for harsh outdoor environments, tropical marine climates, and aggressive industrial atmospheres, these heavy Aluzinc coils deliver up to 4 times longer lifespan than standard AZ70/AZ100 coatings, ensuring unmatched resistance to corrosion, high temperatures, and structural degradation.
High coating Aluzinc steel coils combine the barrier-layer protection and thermal reflectivity of aluminum with the sacrificial galvanic shielding of zinc. The dense alloy microstructure creates an impermeable surface barrier against salt spray, chemical emissions, acid rain, and prolonged UV exposure, making it the premier material choice for premium architectural projects and critical industrial infrastructure.
Alloy Coating Mass Range: AZ150, AZ165, AZ180 (Dual-sided continuous hot-dip 55% Al-Zn alloy)
Thickness Range: 0.1mm to 3.5mm high-precision gauge control
Width Availability: 600mm, 914mm, 1000mm, 1200mm, 1219mm, 1250mm, 1500mm, or custom precision slitted strips
Surface Finish Options: Fine Spangle Metallic Silver, Bare Regular Aluzinc Pattern
Substrate Mechanical Grades: Commercial Quality (CQ / DX51D+AZ), Lock-Forming Quality (DX52D+AZ), Structural Quality (S350GD+AZ, S550GD+AZ / G550 Full Hard / Grade 50, 80)
Surface Passivation & Sealing: Anti-Fingerprint (AFP Clear/Green/Blue), Chromated Passivation, Oiled, Dry
Compliance Standards: ASTM A792 / A792M, EN 10346 (DX51D+AZ, S350GD+AZ), JIS G3321 (SGLCC/SGLCH), GB/T 14978
Coastal & Marine Building Envelopes: Designed for seaside warehouse roofing, port facility wall cladding, marine storage sheds, and high-salinity coastal industrial parks.
Solar Energy Infrastructure: Ideal for heavy-duty solar PV ground mounting systems, structural tracker frames, and outdoor inverter housing cabinets requiring 25+ years of maintenance-free service.
High-Temperature Industrial Exhaust & Equipment: Applied in industrial furnace heat shields, chimney flues, drying kilns, and high-heat ductwork operating continuously.
Heavy Industrial & Chemical Facilities: Utilized in chemical processing plants, fertilizer storage warehouses, paper mills, and mining site structural roofing.
Strict Coating Mass Uniformity: Utilizing advanced automated X-ray fluorescence (XRF) coating gauge control, we guarantee uniform AZ150/AZ180 alloy distribution across both sides without edge thinning or alloy segregation.
Extended Salt-Spray Endurance: Tested under continuous neutral salt spray (NSS) chamber conditions for over 1,500 hours without red rust formation, exceeding standard global architectural requirements.
Seaworthy Export Packaging: Wrapped with VCI anti-rust paper, protective inner plastic film, outer galvanized steel drum shells, heavy corner guards, and high-tensile steel banding on reinforced wooden skids.
