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!
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Ductile Iron Pipe
The product categories of ductile iron pipes and fittings mainly include: water supply pipes, drainage pipes, thermal pipes, polyfluoroester lined pipes, argon resin lined pipes, epoxy ceramic lined pipes, PE lined pipes, zinc-aluminum alloy pipes, jacking pipes, drag pipes, self-anchored pipes, sewage pipes and matching pipe fittings.
EN598 Sewage Ductile Iron Pipe
This EN598 sewage ductile iron pipe has a zinc plus infrared anti-corrosion coating and a high-alumina cement inner anti-corrosion coating with good wear resistance and can cope with special soils and conveying media.
Towing Ductile Iron Pipe
The lengths of our towing ductile iron pipes are 8.15m, 6.0m, 5.7m, can be customized according to customer requirements.
Push-in Ductile Iron Pipe
Push-in ductile iron pipe is mainly used in special construction projects. Pipelines need to cross obstacles such as roads, railways, rivers, and ground buildings. It is not allowed or difficult to dig trenches on the ground at the construction site.
Self-anchored Ductile Iron Pipe
The self-anchored ductile iron pipe adopts a special mechanical design to weld the ring to the socket end to achieve reliable anchoring performance, while retaining the flexibility of the joint, with good flexural performance, which can replace the function of the constraint block and realize the design without constraint blocks.
GT Type Ductile Iron Pipe
The sealing principle of the GT type interface of GT type ductile iron pipe is similar to that of the T type interface. As the internal pressure of the pipeline increases, the tighter the contact surface between the rubber ring sealing sleeve and the socket, the better the sealing effect.
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.
