Section 195.559 - What coating material may I use for external corrosion control?Coating material for external corrosion control under §195.557 must-
(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.