Code of Federal Regulations Title 49. Transportation § 49.195.559 What coating material may I use for external corrosion control?

(a) Be designed to mitigate corrosion of the buried or submerged pipeline;

(b) Have sufficient adhesion to the metal surface to prevent under film migration of moisture;

(c) Be sufficiently ductile to resist cracking;

(d) Have enough strength to resist damage due to handling and soil stress;

(e) Support any supplemental cathodic protection;  and

(f) If the coating is an insulating type, have low moisture absorption and provide high electrical resistance.