Durable, efficient, and engineered to last, the Class K7 DN1000 ductile iron pipe (1,000mm diameter, 7-bar pressure rating) is the backbone of modern water and wastewater systems. Designed for heavy-duty applications, it balances strength, longevity, and cost efficiency—ideal for municipal, industrial, and agricultural projects.
Applications
From high-volume potable water distribution to corrosive industrial effluent transport, the DN1000 excels in:
- Municipal Networks: Urban water supply, stormwater drainage, and sewage systems.
- Industrial Zones: Chemical processing plants, mining slurry transport, and power stations.
- Agricultural Irrigation: Large-scale farmland water distribution.
- Disaster-Resilient Infrastructure: Earthquake-prone regions due to its high elongation (≥10%) and impact resistance.
100+ Year Lifespan
Backed by ISO 2531 standards, the DN1000 pipe resists corrosion through:
- Internal Protection: 2mm cement-mortar lining for pH stability (pH 4–12).
- External Defense: Dual-layer zinc and bitumen/epoxy coatings against soil abrasion and chemical exposure.
- Field Data: Installed pipelines from the 1920s remain operational today, with minimal maintenance costs.
Installation & Joint Flexibility
Adaptable to diverse terrains and project needs:
| Joint Type | Best For | Leak-Tightness |
|---|---|---|
| Tyton® Push-On | Quick buried installations | 99.5% efficiency |
| Mechanical Joint | Above-ground or seismic zones | 99.8% efficiency |
| Flanged Connection | High-pressure industrial uses | 100% efficiency |
Global Compliance & Certifications
- Standards: ISO 2531, EN 545/598, ANSI/AWWA C151.
- Certifications: NSF/ANSI 61 (potable water), WRAS, ISO 9001/14001 (quality/environmental management).
- Material Testing: Tensile strength ≥420 MPa, Brinell hardness ≤230 HBW.
Cost Comparison: DN1000 vs. Smaller Series
| Model | Price per Ton (USD) | Price per Meter (USD) | Lifespan (Years) |
|---|---|---|---|
| DN1000 | 450–520 | 90–110 | 100+ |
| DN900 | 400–465 | 80–125 | 100+ |
| DN600 | 460–500 | 60–75 | 100+ |
Note: DN1000 offers superior flow capacity (≈30% higher than DN900), reducing pump energy costs over time.
Why Choose DN1000?
- Lower Lifecycle Costs: 50% savings vs. steel pipes over 50 years (study by Water Infrastructure Journal).
- Eco-Friendly: 100% recyclable, reducing landfill waste.
- Quick ROI: Leak-free joints cut repair costs by up to 70%.
FAQs
Q: Can DN1000 handle acidic soil?
A: Yes—external epoxy coatings protect against pH levels as low as 3.5.
Q: Is DN1000 suitable for coastal areas?
A: Absolutely. Zinc coatings prevent saltwater corrosion.
Q: What warranties apply?
A: 50-year manufacturer warranty against material defects.
Case Study: Dubai Industrial City
- Project: 12km wastewater pipeline in high-salinity soil.
- Solution: DN1000 with epoxy-coated joints.
- Results: Zero leaks in 5 years, saving $2M in maintenance vs. PVC alternatives.
ductile iron pipe dimensions
| Pipe body weight （kg/m) | |||||||||||||||
| (Inside Diameter) | (Outside Diameter) | Socket Weight | K8 | K9 | K10 | C class | Total weight of Active Length=6M (kg) | Total weight of Active Length=5.7M (kg) | |||||||
| DN(mm) | OD(mm) | ≈ kg | Class | kg/m | K8 | K9 | K10 | C class | K8 | K9 | K10 | C class | |||
| 80 | 98 | 3.40 | 12.20 | 12.20 | 12.20 | C40 | 9.10 | 77.00 | 77.00 | 77.00 | 58.00 | 73.00 | 73.00 | 73.00 | 55.00 |
| 100 | 118 | 4.30 | 14.90 | 15.10 | 15.10 | C40 | 11.12 | 93.70 | 95.00 | 95.00 | 71.00 | 90.00 | 91.00 | 90.00 | 68.00 |
| 125 | 144 | 5.70 | 18.90 | C40 | 119.00 | ||||||||||
| 150 | 170 | 7.10 | 21.80 | 22.80 | 22.80 | C40 | 16.48 | 138.00 | 144.00 | 144.00 | 106.00 | 132.00 | 138.00 | 137.00 | 101.00 |
| 200 | 222 | 10.30 | 28.70 | 30.60 | 30.60 | C40 | 22.62 | 183.00 | 194.00 | 194.00 | 146.00 | 174.00 | 185.00 | 185.00 | 139.00 |
| 250 | 274 | 14.20 | 35.60 | 40.20 | 44.30 | C40 | 32.63 | 228.00 | 255.00 | 280.00 | 210.00 | 218.00 | 244.00 | 267.00 | 200.00 |
| 300 | 326 | 18.90 | 45.30 | 50.80 | 56.30 | C30 | 43.90 | 290.00 | 323.00 | 357.00 | 282.00 | 278.00 | 309.00 | 340.00 | 269.00 |
| 350 | 378 | 23.70 | 55.90 | 63.20 | 69.60 | C30 | 51.88 | 359.00 | 403.00 | 441.00 | 335.00 | 343.00 | 384.00 | 420.00 | 319.00 |
| 400 | 429 | 29.50 | 67.30 | 75.50 | 83.70 | C30 | 60.78 | 433.00 | 482.00 | 532.00 | 394.00 | 414.00 | 460.00 | 506.00 | 376.00 |
| 450 | 480 | 38.30 | 80.00 | 89.30 | 99.00 | C30 | 73.30 | 515.00 | 575.00 | 632.00 | 472.00 | 492.00 | 550.00 | 597.00 | 450.00 |
| 500 | 532 | 42.80 | 92.80 | 104.30 | 115.60 | C30 | 87.20 | 600.00 | 669.00 | 736.00 | 566.00 | 572.00 | 638.00 | 702.00 | 540.00 |
| 600 | 635 | 59.30 | 122.00 | 137.30 | 152.00 | C30 | 120.62 | 791.00 | 882.00 | 971.00 | 783.00 | 755.00 | 842.00 | 926.00 | 747.00 |
| 700 | 738 | 79.10 | 155.00 | 173.90 | 193.00 | C25 | 142.15 | 1009.00 | 1123.00 | 1237.00 | 932.00 | 963.00 | 1071.00 | 1179.00 | 889.00 |
| 800 | 842 | 102.60 | 192.00 | 215.20 | 239.00 | C25 | 177.07 | 1255.00 | 1394.00 | 1537.00 | 1165.00 | 1197.00 | 1330.00 | 1465.00 | 1112.00 |
| 900 | 945 | 129.60 | 232.00 | 260.20 | 289.00 | C25 | 197.68 | 1521.00 | 1691.00 | 1863.00 | 1446.00 | 1452.00 | 1613.00 | 1777.00 | 1257.00 |
| 1000 | 1048 | 161.30 | 275.00 | 309.30 | 343.20 | C25 | 266.28 | 1811.00 | 2017.00 | 2221.00 | 1759.00 | 1729.00 | 1925.00 | 2118.00 | 1679.00 |
| 1100 | 1152 | 194.70 | 362.80 | 2372.00 | |||||||||||
| 1200 | 1255 | 237.70 | 374.00 | 420.10 | 466.10 | C25 | 373.88 | 2482.00 | 2758.00 | 3034.00 | 2481.00 | 2370.00 | 2632.00 | 2894.00 | 2369.00 |
| 1400 | 1462 | 279.30 | 547.20 | 3563.00 | |||||||||||
ductile iron pipe Mechanical property
| Mechanical Property | |||||||
| Nominal Diameter | Hydraulic test | Tensile strength | Elogation | Yield strength | Bending strength | Brinell hardness | Thickness of cement lining |
| DN(MM) | Mpa | Mpa | % | Mpa | Mpa | HB | mm |
| DN80-DN300 | 5 | ≥420 | ≥10 | ≥300 | ≥590 | ≤230 | 3 |
| DN350-DN600 | 4 | ≥420 | ≥10 | ≥300 | ≥590 | ≤230 | 5 |
| DN700-DN1000 | 3.2 | ≥420 | ≥10 | ≥300 | ≥590 | ≤230 | 6 |
| DN1100-DN1600 | 2.5 | ≥420 | ≥7 | ≥300 | ≥590 | ≤230 | ….. |
