Coatings are the first line of defense against corrosion. However, no coating is perfect. Damage can occur during application, shipping, or installing that can leave area of the pipe exposed.
Advantages
- reduce the current needed to protect the structure.
- costs
Limitations
- damage to coating can result in rapid corrosion of the structure in the damaged area
A form of cathodic protection is recommended to be used along with a proper coating.