Protective Coatings for Steel - Overview
Protective coatings are covered under the following categories at UL based on the type of coating and end-use application. A brief description of each category follows.
| Category Name |
Category Code Number (CCN) |
| Coatings, Organic, for Steel Enclosures of Outdoor-use Electrical Equipment |
DTOV2 |
| Coatings, Metallic |
DTHW2 |
| Coatings, Organic, for Use on Metal-enclosed Switchgear Assemblies |
DTZI2 |
Coatings, Organic, for Steel Enclosures of Outdoor-use Electrical Equipment (DTOV2)
This category covers organic coatings (e.g. paints, enamels, lacquers, varnishes) intended for use as protection against atmospheric corrosion of steel enclosures of outdoor-use electrical equipment. The basic standard used to investigate products in this category is ANSI/UL 1332, "Organic Coatings for Steel Enclosures for Outdoor Use Electrical Equipment."
Coatings, Metallic (DTHW2)
This category covers metallic coatings, including zinc, zinc-iron, aluminum-zinc, zinc-aluminum-magnesium and zinc-nickel alloy and the steel substrates to which they are applied. The basic standard used to investigate products in this category is ASTM A653/A653M, "Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process." Additional standards may be utilized to investigate other metallic coating types/designations if found to be appropriate.
This category covers organic coatings intended for use as protection against corrosion of metal-enclosed, low-voltage-power circuit-breaker switchgear.The corrosion protection /coating (paint) qualification test requirements for these assemblies are outlined in UL 1558, "Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear," and ANSI/IEEE C37.20.1, "IEEE Standard for Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear."
Product Submittal
To submit a protective coating for investigation, please contact Customer Service to request a quote or complete the online Request for Quote form. Customer Service is available globally to help you with the product submittal process or any other inquiries about protective coatings. UL recommends completing a submission form when submitting your request.
