DN500 K9 ductile iron pipes are engineered for high-pressure industrial and municipal systems, offering exceptional strength and reliability. As part of the K9 pressure class, these pipes are optimized for demanding environments.
Key Features & Specifications
DN500 K9 ductile iron pipes combine robust construction with advanced engineering for critical infrastructure projects.
| Parameter | Details |
|---|---|
| Material | Ductile Iron (Grade 500-700 MPa tensile strength) |
| Pressure Class | K9 (PN25–PN40 / 25–40 bar) |
| Coating | Zinc-epoxy external coating + cement-mortar lining |
| Standards | ISO 2531, EN 545, EN 598, AWWA C151 |
| Joint Type | Push-on T-Joint, Flanged, Mechanical |
| Lifespan | 100+ years (with proper installation) |
Applications
- Industrial fluid transport (water, chemicals, slurries)
- Municipal water and sewage networks
- Cooling systems in power plants
- Large-scale irrigation and drainage projects
- Mining and oil/gas pipeline infrastructure
Advantages of DN500 K9 Ductile Iron Pipes
✅ High-Pressure Performance: K9 class ensures reliability under PN25–PN40 loads.
✅ Corrosion Resistance: Dual-layer coating protects against soil and chemical aggression.
✅ Durability: Resists cracking and deformation under heavy external loads.
✅ Cost-Effective: Lower lifecycle costs vs. steel or HDPE alternatives.
✅ Eco-Friendly: 100% recyclable material with minimal environmental impact.
K9 Class vs. K8/K12: Key Differences
| Class | Pressure Rating | Wall Thickness | Typical Use Case |
|---|---|---|---|
| K8 | PN16–PN25 | Thinner | Low-pressure urban networks |
| K9 | PN25–PN40 | Standard | Industrial/municipal systems |
| K12 | PN40+ | Thicker | Extreme-pressure applications |
K9 is the most widely used class for balancing cost, pressure capacity, and durability.
Comparison: DN500 vs. DN200, DN1200
| Parameter | DN500 (K9) | DN200 (K9) | DN1200 (K9) |
|---|---|---|---|
| Pressure Rating | PN25–PN40 | PN16–PN40 | PN30–PN40 |
| Wall Thickness | 10.8–14.2 mm | 7.2–10.3 mm | 18.0–22.5 mm |
| Weight (kg/m) | 90–130 | 35–50 | 250–350 |
| Typical Use | Industrial pipelines | Municipal distribution | Regional water mains |
| Installation Cost | High | Moderate | Very High |
Price Table (2025 Reference)
| Diameter | Pressure Class | Price per Meter (USD) |
|---|---|---|
| DN500 K9 | PN30 | 150 |
| DN200 K9 | PN25 | 75 |
| DN1200 K9 | PN40 | 350 |
Prices vary based on order volume, coatings (e.g., polyurethane), and delivery terms. Request a quote for bulk project rates.
International Standards & Certifications
- ISO 2531: Defines mechanical properties and dimensional tolerances for K9 pipes.
- EN 545/EN 598: Ensures compliance with EU water and sewage system requirements.
- AWWA C151: Certifies suitability for North American infrastructure projects.
Why Choose DN500 K9 Ductile Iron Pipes?
- Proven Reliability: Trusted in global industrial and municipal projects.
- Adaptability: Compatible with trenchless installation methods.
- Low Maintenance: Minimal downtime over its 100+ year lifespan.
For technical specifications or custom solutions, download our K9 catalog or contact our team.
Technical Notes
- DN500 K9 pipes are ideal for systems requiring leak-free performance under cyclic pressure loads.
- Custom internal linings (e.g., epoxy, polyurethane) are available for corrosive media.
