Asset: Bridge, Offshore Structure, Onshore Structure, Pipeline, Pressure Vessel
Environmental Characteristic: Below Freezing Point, High Humidity, Low Humidity
Industry: Oil and Gas, Pipelines and Underground Systems, Energy Generation and Distribution, Water and Wastewater, Transportation Infrastructure, Maritime, Pulp and Paper, Misc. Corrosion
Substrate: Carbon Steel
Two-Component Weatherable Aliphatic Polyurethane Topcoat,Performance-Based
This specification covers the requirements for a high-performance two-component UV-stable polyurethane topcoat (ASTM D 16, Type V polyurethane). It is intended as a topcoat that provides excellent color and gloss retention, not as a thick-section elastomeric coating. Coatings meeting the requirements of this specification are generally suitable for exposures in SSPC Environmental Zones 1A (interior, normally dry), 1B (exterior, normally dry), 2A (frequently wet by fresh water, excluding immersion), 2B (frequently wet by salt water, excluding immersion), 3B (chemical exposure, neutral), and 3C (chemical exposure, alkaline). The specified coating is intended for application by brush, spray, or roller. It is generally applied over a primer or intermediate coating.