With the right protective coating, seawater is not aggressive. Our coatings can withstand long-term exposure to high levels of salt for extended periods.
Corrocoat has developed its product lines to ensure they offer superior corrosion resistance for infrastructure and equipment surfaces exposed to the harsh marine environments.
For a wide range of application purposes, Corrocoat has developed new products that will guarantee an increased life expectancy of surfaces and provide long-term protection in excess of 25 years when applied directly.
Causes of Marine Corrosion
A distinguishing feature of the marine environment is the universally present high salt content in the air and seawater which acts as a catalyst for the corrosion of offshore structures, such as offshore oil rigs. Corrosion damage in these environments is also influenced by the presence of other chemicals and various pollutants in the seawater, air and ports. Additional factors affecting both the chemical and electrochemical reactions leading to corrosion include:
- Dissolved gases present in seawater, particularly dissolved oxygen
- Carbon dioxide, that affects the pH value of the water
- Carbonate scale built up on the metallic surfaces being corroded
- Marine life and bacteriological activity
- Electrical conductivity of seawater
- Climatic conditions of the marine environment
- Coastal pollution
- Sulphate-reducing bacteria which causes anaerobic steel corrosion
Surface preparation of the metal prior to applying coatings is an important requirement. Among factors that influence the effectiveness of coating performance in preventing corrosion, cleanliness of the surface is arguably the most significant. It is crucial that scale, grime, rust and grease are removed prior to the coating application beginning, ensuring complete and strong adhesion between the coating and substrate.
Generally, with offshore structure and ship applications, abrasive blasting is the cleaning method utilised.
Marine Components We’ve Treated:
- Seawater Intakes & Outflows
- Sub Sea Structures
- Fresh Water Tanks
- Condenser Tubes
- Heat Exchangers
- Valve Manifolds
- Hulls & Casings
- DEMON Vessel
- Ballast Tanks
- Stern Tubes
- Acid Tanks
- Sea Walls
For machinery and infrastructure exposed to intense workloads and harsh operating environments, such as the Defence Force, Corrocoat offers a high-performance range. Corrocoat is the only protective coatings manufacturer that gives our clients a ‘Made by us, Applied by us’ guarantee.
Our Marine Coatings at Work.
Our coatings have been applied in the harshest of saltwater conditions including on Australian Navy vessels and Queensland coast guard boats. These watercraft spend large periods of time in the seawater and their coating applications must offer premium protection against marine corrosion.
Long-Term Corrosion Protection.
Our Corrocoat products offer long-term corrosion protection for infrastructure exposed to abrasive, corrosive, and harsh environments.