Zinc / Aluminum Flake Coating
Zinc-aluminium and zinc-aluminium-tin alloy coatings for fasteners — offering enhanced galvanic protection and superior corrosion resistance compared to standard zinc coatings. Applied by thermal spray or dip coating. Suitable for subsea, marine splash zone, and aggressive offshore atmospheric environments. Supplied per client specification.
| Standard | Client / Project Specification |
| Base Material | Carbon Steel, Structural Steel, Alloy Steel |
| Salt Spray | 1,000–2,000+ hours (alloy dependent) |
| Thickness | 25–150 µm |
| Applications | Marine splash zone, subsea structural, coastal offshore, foundation bolt systems |
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Zinc-aluminium and zinc-aluminium-tin alloy coatings represent an advanced category of metallic protective coatings for fasteners used in marine, offshore, and highly corrosive environments. These alloy systems combine the cathodic (sacrificial) protection of zinc with the barrier protection of aluminium, and in some formulations, the surface lubricity enhancement of tin.
Common Zinc-Aluminium Alloy Systems:
• Zn-Al (55% Al, 43.4% Zn, 1.6% Si) — Galvalume / Aluzinc type: Outstanding corrosion resistance — 2–6 times superior to standard zinc; widely used on structural fasteners and sheet metal fixings in coastal environments
• Zn-Al-Mg alloys (ZM coating): Magnesium addition further enhances corrosion resistance, particularly at cut edges and damaged areas; increasingly specified in European automotive and construction
• Zn-Al-Sn alloys: Tin addition provides lubricity and anti-galling properties while maintaining the galvanic protection matrix — suitable for threaded assemblies in marine environments
Application Methods:
- Thermal Spray (TWAS / Flame Spray): Applied to large anchor bolts, foundation bolts, and structural fasteners on-site or in-shop
- Dip Coating: Batch process similar to hot-dip galvanizing but in Zn-Al alloy bath
- Mechanical Plating with Zn-Al Powder: Cold process for high-strength fasteners
All zinc-aluminium-tin coatings for Asia Bolts supply are processed and documented per client and project specifications, with coating composition analysis, thickness measurements, adhesion testing, and salt spray certification.
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Packaging Information
📦 Standard: Cartons, wooden boxes or pallets based on quantity and customer requirements
🎁 Custom: Polybag + carton on request
🚢 Export: Fumigated pallets available
📋 Each box includes inspection certificate
Delivery Information
📦 Lead Time: Stock items: 1-5 days | Custom manufacturing: 7-30 days
🚢 Shipping Methods: Air freight, sea freight, or land transportation. FOB, CIF, DDP terms available.
📋 Full export documentation provided with every shipment: Commercial Invoice, Packing List, MTC, Bill of Lading, and Certificate of Origin
☑ Saudi Aramco Approved: Recognized vendor for critical upstream and downstream projects.
🔩 Custom Manufacturing: We produce non-standard lengths and diameters based on your drawings.
🏅 Triple ISO + CE Certified: ISO 9001 Quality, ISO 45001 Safety, and ISO 14001 Environmental certification, plus CE marking for European market compliance.
🏭 32,260 sqm Facility: The largest fastener manufacturing complex in the Middle East, equipped with advanced CNC machinery and full in-house production capability.
🔬 In-House Testing Lab: Full material traceability from raw stock to finished product. Tensile, hardness, dimensional, and spectroscopic testing all performed on-site.
🚚 Global Delivery: Shipped to 70+ countries via established logistics networks. Flexible packaging, documentation and third-party inspection support available.
