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.