55% Al-Zn Coated Steel

Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of 55% al-zn coated steel in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.

Premium 55% Al-Zn Coated Steel Coil - Engineered for Long-Term Performance & Cost Efficiency

Optimized for architects, construction contractors, and metal fabricators seeking corrosion-resistant steel coils with verified lifetime value, our 55% Aluminum-Zinc alloy coated steel coils deliver superior protection exceeding traditional galvanized steel (GI). Developed to meet global standards including ASTM A792, EN 10346, and JIS G 3321, this high-performance building material dominates search queries for critical specifications:

Top-Searched Gauges: 0.30mm, 0.40mm, 0.45mm, 0.50mm, 0.70mm (matching roofing/siding industry preferences)

High-Volume Widths: 1000mm, 1200mm, 1250mm (Catering to global roll-forming equipment)

Key Coating Grades: AZ60 (60g/m²), AZ80 (80g/m²), AZ100 (100g/m²) - AZ100 being the fastest-growing search term for coastal/marine applications

Core Performance Claims: "Salt spray resistance 1000hr+", "Heat resistance 315°C", "Solar reflectance 85%" (Validated per ISO 9227, ASTM D4803)

Engineered with a precise alloy composition (55% Al, 43.4% Zn, 1.6% Si), the coating creates a dual-phase barrier: aluminum provides durable atmospheric corrosion resistance, while zinc sacrificially protects cut edges - directly addressing "#galvalume edge corrosion protection", a recurring technical concern among buyers.

For procurement managers comparing GI vs Galvalume lifetime cost, third-party studies confirm 2-4x service life extension in industrial/coastal environments (TRB/NCHRP Report 611), reducing replacement frequency and total ownership costs. This aligns with rising searches for "long-life roofing sheets" and "low-maintenance cladding".

Sustainable Advantage: The natural bright surface (L* 75-85) eliminates mandatory painting, supporting LEED v4.1 credits for heat island reduction - critical for searches like "cool roof metal sheets" and "energy-efficient building envelope".

Available with chromium-free passivation and certified for global compliance (REACH, RoHS), this solution serves major applications:

#1 Search Volume: Metal roofing sheets (especially "corrugated galvalume roof")

Emerging Demand: Solar mounting structures ("PV support frame corrosion protection")

Industrial Growth: HVAC ductwork ("high temp duct material") & agricultural storage ("grain bin steel coil")

Company profile

 

Xi'an Dongmeng Steel Co., Ltd., annual production capacity: 300,000 tons of high-end coated steel plates (including 55% Al-Zn product line), fully automated continuous hot-dip production line; technical certification: passed ISO 9001, ISO 14001, EU CE certification, in line with ASTM A792/A792M, EN 10346 and other international standards; R&D capabilities: national metal coating laboratory, support customized coating composition (such as zinc layer thickness ±1g/㎡ precision control); quality control system: online X-ray coating thickness gauge + AI surface defect detection system, defect rate ≤0.3%.

01

Extended Lifespan, Optimized Costs

Combines aluminum's robust barrier protection with zinc's self-healing galvanic defense. Delivers 2-4X greater corrosion resistance vs. standard galvanized steel (GI), enabling 30+ year service life for building roofs. Significantly reduces replacement frequency and lifetime maintenance expenses.

02

Superior Performance in Extreme Environments

Maintains integrity under sustained 315°C (600°F) heat (peaking at 450°C/840°F) and resorts coastal salt spray or industrial acid rain. Engineered for demanding applications: solar farms, chemical plants, and coastal infrastructure.

03

Energy Efficiency & Operational Savings

High-aluminum surface reflects 85% of solar heat, reducing building surface temperatures by 8-15°C (14-27°F). Lowers cooling energy consumption by 20%+. Thinner gauges achieve equivalent strength – cutting material, transport, and installation costs.

04

Precision-Engineered Solutions

Coating weight (40-180 g/m²) for corrosion severity

High-strength substrates (550MPa+ yield)

Specialty surfaces (chromium-free, conductive, PVDF pre-painted)
Tailored compliance with global sustainability and performance standards.

 

 

 

 

 

 

 

 

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