Duct Coating - Advancement and Challenges

Duct coatings play a pivotal role in protecting ducts from environmental factors, wear and tear, and corrosion. The selection of the right coating depends on various factors, including material properties, compatibility with field joint coatings, construction methods, and design data.

Our journey begins with a historical perspective, tracing the development of duct coatings from the early days of asphalt and coal tar applications in the field to the introduction of double-layer polyethylene coverings in the 1950s. This evolution is paralleled by advancements in internally coated gas pipelines, which have become a standard for external anti-corrosion protection today.

Dive into the intricacies of duct coatings, which are typically applied in factory settings, while field joint coatings are implemented on-site. Effective corrosion prevention for buried and submerged pipelines necessitates a fusion of coatings and cathodic protection.