Surface treatment: rust removal treatment with sandblasting method to remove rust, oxide scale and other impurities. The surface treatment quality should reach Sa2.5, and the surface roughness should be 35-75um. Remove the gray oil from the non-metallic surface.
Steel Chimney:
Primer: long durability inorganic zinc-rich primer
Topcoat: heat resistant topcoat (red or white)
Non-metallic Chimney:
Primer: Acrylic marking primer
Topcoat: Acrylic marking topcoat ( red or white )