3. Standardized Procurement and Selection Parameters (Orange‑Easy Aluminum Industry Unified Standards)
Base material: For coastal or overseas projects with high salt‑spray exposure, select 3003 or 5005; for inland office buildings, use the standard 6063; for ultra‑tall structures requiring high strength, opt for 6061. Thickness: Indoor ceiling panels, 1.5–2.0 mm; exterior curtain‑wall systems, 2.5–3.0 mm; custom‑shaped landmark façades, 4–5 mm. Surface finish: Polyester powder coating for inland cities; PVDF fluorocarbon coating for long‑term outdoor use; FEVE ultra‑weather‑resistant coating for high‑temperature environments in the Middle East. Procurement budget guidelines: Domestic industrial‑grade powder coating, RMB 130–180 per m²; fluorocarbon coating, RMB 190–320 per m²; for export, FOB pricing ranges from USD 22 to 55 per m².
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