(2) The process is flexible, suitable for long-term protection of important large-scale and difficult-to-maintain steel structures, and can be used for on-site construction;
(3) The coating sprayed with zinc or aluminum and sealed with antirust paint can greatly prolong the service life of the coating. From the theoretical and practical application results, the coating sprayed with zinc or aluminum is the best primer for anti-corrosion coatings. The protective life of the composite coating of metal spray coating and anti-corrosion coating is longer than the sum of the life of metal spray coating and anti-corrosion coating, and is several times that of a single coating.
Heavy-duty long-lasting anticorrosive coating consists of primer, intermediate paint and topcoat.
Considering the long-term economy, aluminum spraying coating is the most economical, but the one-time investment is large, and the well-constructed coating can be maintained within 10 years. Epoxy zinc-rich primer+epoxy micaceous iron intermediate and acrylic polyurethane long-term protection system are more economical.