DN80 Ductile Iron Pipe | High Strength & Corrosion Resistance

DN80 ductile iron pipe (nominal diameter 80mm) is a standard piping solution for water distribution, sewage, and industrial fluid transport. Manufactured from ductile iron (ISO 2531, EN 545), it combines high tensile strength (≥420 MPa) with ductility (elongation ≥10%), making it resistant to impact and thermal stress . The pipe's design pressure typically ranges from PN10 to PN40, suitable for most municipal and industrial applications. Internal linings, such as portland cement (ISO 4179), prevent corrosion and scaling, while external zinc coatings (≥130g/m²) protect against soil corrosion . Jointing systems include push on rubber ring fittings for quick installation or flanged connections for high pressure systems. Key advantages over steel or PVC include superior abrasion resistance (ideal for sandy water), long service life (50+ years), and low maintenance. Installation considerations include proper bedding (sand or gravel) to distribute loads and allowable deflection (up to 3° per joint) to accommodate ground movement. DN80 pipes are often used in branch lines and smaller distribution networks, with compatibility with various fittings (elbows, tees, reducers) ensuring system flexibility.