Pipelines operate in some of the most severe environmental conditions, to slow down the decrease in strength and function of a pipeline, therefore it is necessary  to protect by protective coatings. A protective coating is a layer applied to the surface of concrete, iron or steel which has the function of avoiding direct contact with air, liquids, harsh chemical substances and other substances that can cause corrosion. protective coating not only prevents water penetration but also has the function of preventing damage to concrete, pipes or steel.