Cement Mortar-Lined Ductile Iron Pipe

Product description
A ductile iron pipe with an internal cement mortar lining applied by centrifugal processing. The lining protects the internal metal surface and is designed for drinking-water and water-transmission applications.

Key features

• Internal protection against water-related corrosion
• Smooth and dense internal surface
• Self-healing characteristics for minor surface cracks
• Strong adhesion to the ductile iron surface
• Acceptable internal surface roughness
• Helps prevent undesirable substances from transferring into drinking water
• Applied by centrifugal lining technology
• Cured under controlled temperature and humidity conditions

Available lining materials

• Portland cement
• High-alumina cement
• Blast-furnace slag cement
• Sulphate-resistant cement, depending on water conditions

Standards

• Internal cement mortar lining according to ISO 4179
• Cement-based coating may also be applied according to EN 598

Selection criteria

The cement type is selected according to:

• Water pH
• Aggressive carbon dioxide content
• Sulphate concentration
• Magnesium concentration
• Ammonium concentration