SHANDONG JULONG PREPAINTED STEEL CO.,LTD

1. Material properties - Corrosion resistance The aluminum-zinc alloy layer accounts for 55% (aluminum) + 43.5% (zinc), which is 2-3 times longer than pure galvanized sheet*, and has better salt spray resistance - Heat resistance Aluminum element is resistant to high temperature oxidation (can withstand 600℃ for a long time), suitable for high temperature environments (such as chimneys, ovens) - Reflectivity High light reflectivity (80%+), reduces the temperature of building roofs, saves energy and cools down 2. Process technology - Coating uniformity Using air knife precision control technology, the coating deviation is ≤±3g/m² to avoid the risk of local corrosion - Substrate strength Customized substrate selection (yield strength can reach up to 550MPa), taking into account both lightweight and load-bearing requirements 3. Surface treatment - Coating adhesion Exclusive phosphating pretreatment technology, coating peel strength ≥12N/mm (industry average 8N/mm) - Environmentally friendly coating Optional chromium-free passivation coating (RoHS certification) to meet EU environmental protection requirements 4. Cost-effectiveness - Life cycle cost Maintenance costs are reduced by 50% within a 30-year service life (corrosion resistance eliminates the need for frequent replacement)