What is the ISO 12944 standard?

ISO 12944 is the international standard defining the protection of steel structures against corrosion through painting. It determines environmental classes and system lifetimes.

What do C1–C5 corrosion categories mean?

They define atmospheric corrosion severity. C1 is low-risk indoor environment, while C5 is an aggressive environment with high humidity, chemical, and marine exposure.

Why is surface preparation critical?

Most of coating performance depends on surface preparation. Incorrect preparation leads to premature film degradation.

What is the Sa 2½ blasting grade?

It is the industrial standard cleanliness level where visible dirt, rust, and old coatings are almost completely removed from the surface.

What does a zinc-rich primer do?

It provides cathodic protection, reducing the electrochemical corrosion rate on steel surfaces.

Why is DFT measured? | Industrial Knowledge Center

Dry film thickness determines the protective performance of the coating. Insufficient DFT causes premature failure.

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Why is DFT measured?

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