Ductile Iron Pipe
Ductile Iron Pipe (DIP), also known as Nodular Cast Iron Pipe, is a revolutionary piping material developed in the 1950s. By adding magnesium alloy to molten iron, the graphite within the iron matrix forms spherical nodules instead of flakes, achieving a perfect balance of ductility (like steel) and corrosion resistance (like traditional cast iron).
Design Life: 50–100 years, widely used in critical infrastructure.
Global Adoption: Over 70% of water supply networks in Europe and North America use DIP.
Key Features & Advantages
|
Feature |
Technical Details |
Benefit |
|
Ultra-High Strength |
Tensile strength ≥420 MPa, yield strength ≥300 MPa, 3× stronger than gray cast iron. |
Resists ground pressure, traffic loads, and seismic forces. |
|
Superior Flexibility |
Minimum elongation rate 10%, can bend up to 3°–5° without cracking. |
Adapts to soil movement and installation misalignment. |
|
Corrosion Defense |
- Exterior: Zinc spray (≥130 g/m²) + asphalt coating. |
Survives harsh soils and aggressive fluids (pH 5–12). |
|
Leak-Free Joints |
TYTON® push-on joints or mechanical joints (M/F type), tested to 1.5× working pressure. |
Reduces water loss and maintenance costs. |
Applications
|
Field |
Project Examples |
Regional Cases |
|
Municipal Water |
Tokyo Metropolitan Water Supply (Japan), Thames Water (UK), Beijing Water Authority (China). |
DN1200 pipes for urban mains with 6.0 m/s flow rate. |
|
Wastewater |
Singapore Deep Tunnel Sewerage System, Los Angeles Sanitation District. |
Epoxy-lined pipes for corrosive sewage (H₂S resistance). |
|
Industrial |
Oil refinery cooling systems (Saudi Aramco), geothermal plants (Iceland). |
High-temperature resistance up to 80°C with special coatings. |
Dimensional Range
Diameter: DN80–DN2600 (3–102 inches)
Length: 6 meters (standard), customizable up to 9 meters.
Wall Thickness: Class K9/K10/K12, compliant with ISO 2531.
Sustainability & Certifications
Circular Economy: 100% recyclable, with 95% recycled iron content in production.
Carbon Footprint: 30% lower CO₂ emissions compared to steel pipes (ISO 14064 verified).
Certifications:
Water Safety: NSF/ANSI 61, WRAS, KIWA.
Quality Systems: ISO 9001, ISO 2531, GB/T 13295.
Ductile Iron Pipe – The Smart Choice for Sustainable Infrastructure!
- View as
T-joint Ductile Iron Pipe
The T-joint ductile iron pipe has a simple structure, is easy to install and has good sealing performance.
We are looking forward to your buy Ductile Iron Pipe from our company made in China - Epoch Equipment. Our factory is a Ductile Iron Pipe manufacturer and supplier in China. You are welcome to buy our high quality products.
