The DN400mm ductile iron pipe sets the benchmark for durability and adaptability in pressurized fluid transport systems. Engineered to excel in demanding environments, this pipe meets ISO 2531, EN 545, and ASTM A536 standards while offering a 120-year service life — making it the top choice for water, industrial, and energy projects across six continents.
Material Innovation
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Advanced Alloy: Ductile iron (Grade 450-10) with ≥92% iron, 2.5% carbon, and trace magnesium for enhanced flexibility (12-18% elongation).
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Multi-Layer Protection:
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Base: Zinc-aluminum coating (150g/m²) for corrosion resistance.
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Interior: Cement-mortar lining (3mm thickness) or polyethylene lining for aggressive fluids.
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Optional: V-Bio® enhanced zinc for soil microbiological resistance.
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Certifications: Compliant with ISO 2531, EN 598 (sewage), AWWA C151, and AS 2280.
Applications & Performance
| Industry | Use Case | Performance Data |
|---|---|---|
| Oil & Gas | Offshore brine transport | Handles pressures up to 420 psi |
| Urban Renewal | Stormwater drainage | Zero leaks in 98% of Tokyo’s 2021 network upgrade |
| Mining | Slurry pipelines | Resists abrasion at 3mm/year loss rate (vs. 10mm for steel) |
| Desalination | Seawater intake lines | 50-year corrosion warranty in coastal UAE projects |
Model Comparison & Pricing
(DN400mm, 6m length, cement-lined)
| Model | Wall Thickness (mm) | Max Pressure (psi) | Weight (kg/m) | Price (USD/unit) |
|---|---|---|---|---|
| DI-DN400A | 9.0 | 300 | 98 | $420 |
| DI-DN400B | 10.5 | 350 | 115 | $485 |
| DI-DN400C | 12.0 | 420 | 135 | $550 |
| Steel S400 | 8.0 | 300 | 120 | $620 |
Regional pricing adjustments: EU (+8% for EN 545 compliance), Asia (-5% for bulk orders).
Lifespan & Sustainability
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Service Life: 120+ years (validated by 30-year field data from German municipal networks).
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Eco Impact: 100% recyclable, 35% lower CO2 emissions vs. concrete pipes during production.
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Case Study: South Australia’s 2020 pipeline retrofit reduced water loss by 22% using DN400mm DI pipes.
Installation Flexibility
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Joint Systems:
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K-Type Push-On: 50% faster installation than welded joints.
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Mechanical Joint (MJ): Ideal for seismic zones (tested to Richter 7.5).
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Trenchless Options: Suitable for pipe bursting and slip-lining rehabilitation.
Global Compliance
| Market | Key Standards | Unique Requirements |
|---|---|---|
| Middle East | ISO 7186, BS 4772 | Sand abrasion resistance testing |
| North America | AWWA C150, NSF/ANSI 61 | Lead-free certification |
| Asia-Pacific | GB/T 13295, JIS G5527 | Earthquake-resistant design (Zone 3+) |
Competitive Advantages
✅ Pressure Mastery: Withstands 4x surge pressures compared to HDPE.
✅ Thermal Resilience: Operates in -30°C to 250°C ranges with specialty linings.
✅ Cost Efficiency: 15% lower lifetime costs than steel due to minimal maintenance.
FAQ
Q: How does DN400mm DI pipe perform in acidic soils?
A: Our V-Bio® coating protects against pH 4-10 soils, backed by a 20-year warranty.
Q: Can it be used for gas distribution?
A: Yes, when paired with ANSI B16.42 flanges and tested to 1.5x MAOP.
Q: Minimum bend radius for trenchless installation?
A: 90x pipe diameter (36m) for safe HDD deployment.
Global Success Stories
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Norwegian Hydropower Project: 18km DN400mm DI pipeline withstands 2,000 kPa pressure at -25°C (2022).
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Vietnam Coastal Defense: 5,000 units prevent saltwater intrusion, cutting treatment costs by $1.2M/year.
Request Customized Solutions
Download our DN400mm Technical Handbook or contact regional experts for:
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Site-specific corrosion analysis.
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Seismic joint load calculations.
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Carbon footprint reports.
📺 Installation Video Guide
For a visual guide on installing DN400mm ductile iron pipes, refer to the following video:
