Surface tolerance refers to the degree of cleanliness, receptiveness and effectiveness of a substrate metal to support a coating that is applied to its surface as a corrosion prevention method.
Surface tolerance is directly proportional to the effectiveness of a corrosion preventative coating.
An ideal surface tolerance is characterized by minimal roughness, debris and chemical reactivity. Surface tolerance can be improved by performing the following preparatory steps prior to applying a coating or other form of treatment:
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