Coal tar epoxy anticorrosive coating for buried pipeline sewage tanks

Composition: A coal tar coating composed of modified resin, coal tar pitch, pigments, additives, solvents, etc.

Main Features:

◆ Excellent water and saltwater resistance;

◆ Good oil and chemical resistance;

◆ Tough film with excellent adhesion, wear resistance, impact resistance, and other physical properties;

◆ Good rust prevention and durability;

◆ Resistant to microbial corrosion, excellent electrical insulation properties;

Applications:

Suitable for use as an external anti-corrosion coating and pipe joint anti-corrosion coating for petroleum pipelines, water pipelines, and cooling water pipelines in power plants and industrial enterprises. It can also be used as an internal rust prevention coating for cooling water pipelines in power plants or industrial enterprises.

Color: Black

Basic Parameters: Density approx. 1.5 g/cm³

Dry Film Thickness: 70 μm  80 μm

Wet Film Thickness: 140 μm  135 μm

Drying Time:

Theoretical Usage: 210 g/m² 170 g/m²

Recommended Number of Coats: For external pipeline or pipe joint anti-corrosion lining: two layers of fabric and three coats of paint (standard anti-corrosion structure) – 1 coat of primer  2 coats of topcoat  with 2 layers of glass fabric wrapped between coats.

Application Sequence: Primer - Topcoat - Glass Fabric - Topcoat - Glass Fabric - Topcoat, total thickness reaching 500~800 μm.

Internal Pipeline Anti-corrosion Coating: 1 coat of primer, 3 or more coats of topcoat, coating thickness should reach 310 μm. Surface preparation: blast cleaning to Sa2.5 grade or manual cleaning to St3 grade. Substrate temperature: for steel without mill scale; blast cleaning to Sa2.5 grade; or power tool cleaning with elastic grinding discs to St3. For steel with shop primer: areas with damaged film, rust, or white rust on zinc must undergo secondary cleaning, grinding to St3. Substrate temperature must be at least 3°C above the dew point.