
Surface Preparation for Industrial Coatings: ISO 8501, SSPC & Practical Selection Guide
Surface Preparation for I
High-solids polyurethane anti-corrosion topcoat (2K) for high-build steel structure protection.
For petrochemical, power, bridges, port facilities.
Mixing ratio 7:1; pot life 3 h.
Low VOC 305 g/L; artificial weathering 1500 h.
Overview
Two-component high-solids polyurethane anti-corrosion topcoat with low VOC (305 g/L).
Suitable for high-build application; artificial weathering resistance: 1500 h.
Composition
Based on acrylic polyol resin, polyurethane reactive diluent, and chain extender as main film-formers, with pigments and additives.
Cured with polyisocyanate adduct; supplied in Part A & Part B packs.
Typical uses
Long-term protection and finishing for equipment/facility steel structures in various environments, such as petrochemical, power, wind power, cast pipe, bridges, and port facilities.
Technical data (typical)
Appearance: Various colors.
Theoretical consumption: 0.108 L/m²; 0.14 kg/m² at 70 μm DFT (excluding loss).
Density: 1.3 kg/L.
Solids: 80% (by weight); 65% (by volume).
Drying time (25°C): Surface dry 2 h; hard dry 24 h; fully cured 7 d.
Application data (25°C)
Mixing ratio (Part A:Part B): 7:1.
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 24 h; max 7 d.
Recommended coats / DFT: 1 coat 30–70 μm; brush/roller 1 coat 30–45 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 primer; epoxy intermediate coating.
Packing: Part A 21 kg; Part B 3 kg.
Storage: Shelf life 12 months; store dry/cool/ventilated, away from fire and direct sunlight; no outdoor stacking.
CSPE cooling tower damp-proof coating for inner wall anti-corrosion service.
For cooling tower inner wall protection.
Single-component; min recoat 12 h at 25°C.
Resists freeze-thaw, damp heat, and mildew.
Polyurethane cooling tower damp-proof coating (2K) for waterproof anti-corrosion lining.
For cooling towers, sewage tanks, mines, underground buildings.
Primer ratio 24:3; topcoat ratio 18:3.
Pot life 4 h; min recoat 12 h.
Premium polyurethane marking coating (2K) for steel structures and concrete chimneys.
For chimney marking and protection.
Mixing ratio 18:3; pot life 4 h.
High gloss; fully hardened 7 d at 25°C.
Epoxy bitumen cooling tower damp-proof coating (2K) for cooling tower inner wall protection.
For cooling towers, sewage tanks, underground mines.
Mixing ratio 25:2.5; pot life 4 h.
Waterproof, anti-seepage, and mildew resistant.

Surface Preparation for I

Industrial Coating Failur

Anti Corrosion Coating Mi
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