Angola LNG Pipeline

Tasked with transporting gas from offshore oil and gas production facilities to onshore LNG process facilities, the Angola LNG pipeline required high performance coating solutions which aided the smooth flow of gas within the pipeline.

Sherwin-Williams’ European team recommended an internal flow coat for the project in two parts. The first consisted of a 78 kilometer long section of pipeline, which incorporated pipes of various diameters including 18”, 22”and 24” with a length of 12.3 meters per section.

The second, the Angola Block 17, consisted of an 80 kilometer long section, with a diameter of 24” and a length of 12.3 meters per section.

To date Sherwin-Williams has supplied 50,000 liters of coatings across both projects to provide long-term protection against corrosion.

The selected system consisted of a single coat of a two pack epoxy primer/finish flow coat,
designed specifically to protect the substrate against corrosion.

The internal surface of the pipes was blast cleaned to SA 2.5, leaving an average profile of between 40 and 70 microns. The two pack epoxy was then applied in red oxide to a nominal thickness of 75 microns DFT.

The coating was applied using airless spray equipment, with the nozzle held stationary while the pipes were rotated.

The epoxy primer/finish coat was selected for its reliability and proven track record; tested both in our onsite test centre and by third parties, ensuring that it performed when it was needed most.

Coupled with the support of our experienced Technical Services team and our leading Supply Chain unit, we provided a high quality product, with a rapid turn around that ensured the product was delivered on time and in full.