Heat Reflective Galvalume Steel Coil For Building Envelope
Product Description
Our Heat Reflective Galvalume Steel Coil is engineered specifically for building envelope systems that demand long-term durability and energy efficiency. The core of this product is a hot-dip 55% aluminum-zinc-silicon coating (55% Al, 43.4% Zn, 1.6% Si). This unique composition provides 2-6 times better corrosion resistance compared to standard galvanized steel, offering a proven service life of 20-25 years in normal environments.
A key feature is its exceptional heat reflectivity – it reflects over 75% of solar radiant heat, which is nearly double the reflectivity of standard galvanized steel. This superior reflectivity can significantly reduce cooling costs for buildings. The coil also withstands high temperatures up to 315°C (600°F) without discoloration, making it ideal for sun-exposed building surfaces. Certified to ASTM A792/A792M, it delivers reliable performance for demanding architectural applications worldwide.
Technical Parameters
| Parameter | Specification |
| Base Material | High-Strength Steel Coil |
| Thickness | 0.12mm - 3.0mm(±0.02mm) |
| Width | 600mm - 1,500mm |
| Coating Weight | AZ100-AZ275 |
| Heat Reflectivity | >75% (approx. 2x galvanized steel) |
| Aluminum Content | 55% |
| Surface Finish | Chromated/Oiled, Anti-Fingerprint |
| Spangle Type | Minimal Spangle |
| Coil ID | 508mm/610mm |
| Coil Weight | 3-12 Tons |
Applications
Roofing & Wall Cladding: Commercial, industrial, and agricultural buildings.
Structural Components: Light gauge steel frames, purlins, and trusses.
Architectural Elements: Facades, rain gutters, downpipes.
Garage Doors & Security Fencing.
Customization Options
Coating Weight: Tailored within the AZ100-AZ275 range.
Dimensions: Custom thickness, width, and length cuts.
Surface Treatment: Oiled, Chromated, or Anti-Fingerprint.
Spangle Type: Regular, minimized, or zero spangle.
MOQ: Competitive Minimum Order Quantity, with samples available.
Packing and Shipping
Triple-Shield Packaging: VCI anti-rust kraft paper inner layer, 0.3mm PE waterproof film with moisture indicators, steel-strapped pallets + edge guards (max. 8-ton coils).
Global Logistics: FOB/CIF from Chinese ports; 15-20 day delivery for Asia, 30-45 days globally.
Quality Assurance: Pre-shipment inspection and moisture indicators for transit protection.
FAQ
Q:What is the typical lifespan of this product in a building envelope application?
A:Its high solar reflectance (over 75%) means it bounces back a significant portion of the sun's radiant heat. This helps in reducing heat absorption through the building envelope, leading to lower cooling loads and energy savings, especially in hot climates.
Q:What s the payment term for Galvalume Steel Coil?
A:30-50% TT in advance(based on your qty ), 70% balance against copy B/L in 7 workdays.
Q:When will you send BL copy?
A:In 3-5 workdays after shipment date.
Q:When will you send original Documents?
A:In 3-5 workdays when we get the balance.
Q: What is the lead time for samples?
A: Samples are available in 7-10 days after detailed requirements confirmation.
Q:What is your working time?
A: Our online service time is Beijing time: 8:00-22:00. After 22:00, we will reply to your inquiry in the coming working day.
