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2K aliphatic polyurethane topcoat with outstanding UV stability, color retention and weathering resistance for long-term structural protection. Engineered for bridges, transmission towers, offshore and port facilities. Surface dry in 1 hour, 30–40µm DFT.
Overview
Two-component aliphatic polyurethane premium topcoat for long-term protection and high-grade finishing on steel structures.
Provides resistance to chemical media corrosion, seawater, boiling water, oil, benzene solvents, and salt spray; designed for weathering and color retention.
Composition
Based on premium polyurethane resin, premium weather-resistant pigments, weathering extenders, solvents, and imported additives.
Cured with biuret; supplied in Part A & Part B packs.
Typical uses
For long-term protection and high-grade finishing on steel structures in various environments.
Typical applications include vehicles, bridges, steel towers, TV towers, construction machinery, marine and port facilities.
Technical data (typical)
Appearance: Various colors; high gloss, gloss, and matt.
Theoretical consumption: 0.11 kg/m² at 35 μm (excluding loss).
Density: 1.2 kg/L.
Drying time (25°C): Surface dry 1 h; hard dry 12 h; fully cured 7 d.
Adhesion: Grade 1; bending 1 mm; impact 50 kg·cm.
Application data (25°C)
Mixing ratio (Part A:Part B): 18:3.
Induction time: 5 min.
Pot life: 3 h.
Application methods: Airless spray, brush, roller.
Thinner: X-7 polyurethane thinner; dilution 3–7%.
Recoat interval (25°C): Min 12 h; max 7 d.
Recommended coats / DFT: 1 coat 35–50 μm; brush/roller 1 coat 30–40 μm.
Surface preparation
Remove dust and oil contamination from the previous coat; if beyond maximum recoat interval, roughen the surface.
When used as the first coat: blast/shot blast to Sa 2.5 or power-tool cleaning to St 3; surface profile 30–75 μm.
System compatibility / packing / storage
Compatibility: Previous coat—polyurethane intermediate coating; epoxy intermediate coating.
Packing: Part A 18 kg; Part B 3 kg.
Storage: Shelf life 12 months; store dry/cool/ventilated, away from fire and direct sunlight; no outdoor stacking.
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