EN 545 Ductile Iron Pipe | High Strength & Corrosion Resistance

EN 545 ductile iron pipes conform to the European standard for ductile iron pressure pipes, defining material properties, dimensions, and testing requirements for water and sewage applications. The standard specifies grades based on tensile strength (e.g., C40 with ≥420 MPa tensile strength) and yield strength (≥370 MPa for C40), ensuring suitability for pressures up to PN40 . Pipe dimensions range from DN80 to DN1600, with effective lengths of 6m or 5.7m, and internal cement linings (ISO 4179) to prevent corrosion . External protection includes zinc coatings (≥130g/m²) and bitumen paint (≥70μm), meeting ISO 8179 requirements. Joints are typically push on type with NBR or EPDM rubber gaskets (ISO 4633), allowing up to 15° deflection for ground settlement . Testing protocols in EN 545 include hydrostatic pressure tests (1.5x design pressure), tensile tests, and coating adhesion checks. Compared to other standards (e.g., ASTM A746), EN 545 emphasizes dimensional tolerances and impact resistance at low temperatures, making it suitable for cold climate applications. Recent updates to EN 545 incorporate sustainability metrics, such as recycled iron content and life cycle assessment guidelines.