Our Premium Hot-Dip Galvanizing finishing system for Iron & Steel with a 20 year warranty against rust.


What Is Corrosion? cor·ro·sion
  • noun the process of corroding metal, stone, or other materials. "each aircraft part is sprayed with oil to prevent corrosion" damage caused by corrosion. "engineers found the corrosion when checking the bridge"
  • Steel is a metal that is made from iron ore, and let's say, for instance, that steel is constantly surrounded by environmental factors like water and oxygen, the steel may start to see signs of rust in just a few hours.
  • Salt accelerates the rusting process by lowering the electrical resistance of water.


Duragalv® is enhanced hot dip galvanizing for today's steel. Similar to the successful formula of our Nigalv® galvanizing system, Duragalv addresses the requirement for "Green" building and is recommended for those projects where the LEED standards are required.

Duragalv is a unique blend of special High-Grade Zinc (the most environmentally sensitive zinc available) combined with processing systems dedicated to maximizing the aesthetic of the steel product. By combining nickel, utilizing the dry kettle process and creating extensive testing and monitoring procedures, Duncan has taken the art of hot dip galvanizing to the next level.

Since galvanizing is a metallurgical bond between the zinc and the steel, in some cases it is 200% harder than the steel being coated. This hardness provides greater durability allowing the Duragalv process to provide a twenty (20) year warranty against rust.With our in-house testing lab, we have the ability to test our zinc, acids, and other process components to make certain all appropriate standards are met.
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