Case Study

Client

Water and Waste Management, UK.

Application date

September 2021.

Scope of work

Corrosion protection for pipes transporting ground water with high saline and chloride content.

Products

Internal: Polyglass VEF & Corrocoat Armagel.

External: Polyglass Zipcoat.

Coating system

• Abrasive blasted internal and externals to ISO 8501-1 cleanliness standard Sa2½ with a minimum surface area of 50 microns.
• Applied Polyglass VEF internally to achieve a DFT of 500 microns.
• Spark test following coating.
• Applied Corrocoat Armagel internally to achieve a minimum overall DFT of 1850 microns.
• Thickness checked.
• Abrasive blasted externals with new abrasive in accordance with ISO 8501-1to Sa2.
• Pack and prepare for dispatch.
• Applied Polyglass Zipcoat to the externals to achieve a minimum DTF of 800 microns for the drop line.
• Pack and prepare for dispatch.

Coating credentials

Polyglass VEF: A glass flake vinyl ester acrylic co-polymer. Excellent in immersed environments. Excellent flexibility, undercutting resistance and sliding abrasion resistance.

Corrocoat Armagel: A two pack cured vinyl ester, loaded with glass flake and silicon carbide. Excellent abrasion resistance in immersed environments. Applied over Polyglass VEF as a protection layer.

Polyglass Zipcoat: A two pack cold cured multi-monomer isophthalic polyester system loaded with ECR glass flake. Rapid curing coating, with durable corrosion protection and cures below freezing temperatures. It is a single coat application with good edge coverage.