TH   GB
Nippon Paint
Paint and Coating Consultant

Industrial Paint   

Automotive Paint   

Exterior Paint   

   
Rusty Metal Surface
Rusty Metal Surface
Rusty Metal Surface
Surface is near area with high humidity such as river, soil or sea. Other possible causes include expired oil paint system, using low-quality paint which composes of cheap pigment, ignorance to use anti-rust primer or using low-quality anti-rust primer.

Appearance
Rusts exist and push oil paint film to flake. 

Solution

Scrape old paint and rust down to original metal surface and prepare with primer within 4 hours. Apply the anti-rust primer once and refinish the surface twice.