The Class K12 DN800 ductile iron pipe has an ISO 2531-calculated wall thickness of 15.6 mm (e = K × (0.5 + 0.001 × DN), K = 12, DN = 800). Rated for high-pressure service (PN 16 per EN 545-2010/ISO 2531-2009), its robust cement–mortar lining and BioZinalium®/epoxy/bitumen coatings deliver a design life exceeding 100 years—even up to 110 years in aggressive soils. Installation is streamlined by Tyton® push-on (ANSI/AWWA C111), mechanical, and bolt-on flanged (ANSI/AWWA C115) joints, ensuring leak-tight, flexible connections. Manufactured to ISO 2531, EN 545, EN 598, and AWWA C151/C153 standards, Class K12 DN800 pipes offer global compliance, ease of maintenance, and energy-efficient hydraulics.
Application Scenarios
Potable Water Networks
Large-diameter DN800 mains deliver high flow rates with minimal friction loss, making them ideal for urban and rural water distribution. Cement-mortar lining ensures water quality and reduces biofilm formation.
Sewage & Wastewater
Pushing Tyton and mechanical joints resist infiltration and exfiltration, while integral cement lining withstands abrasive solids in rising mains and gravity sewers.
Irrigation Systems
The IRRIGAL BioZinalium® range (DN100–1000) uses zinc-aluminium coatings plus EPDM gaskets for fertilizer-rich soils, offering watertight performance and simplified, tool-free installation in agricultural networks.
Fire Protection & Industrial
Compatible with FM/UL grooved fittings and ANSI/AWWA flanges, these pipes ensure rapid assembly of hydrant and sprinkler mains under PN 16 for reliable fire-suppression systems.
Service Life
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Cement-mortar lining: Centrifugally applied, it prevents tuberculation and maintains Hazen-Williams factors above 130 over decades.
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External coatings: BioZinalium® or bitumen with zinc primer shields against soil corrosion (DDM¹ evaluations).
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Design lifespan: Exceeds 100 years in normal soils; up to 110 years in aggressive environments (sulfate-resistant lining).
Installation & Connection
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Push-on (“Tyton”) Joints: ANSI/AWWA C111 rubber-gasket system provides ±5° deflection, rapid assembly, and NSF-61 compliance.
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Mechanical Joints: Per AWWA C111, 80–1600 mm sizes allow 360° rotation, ideal for curves and differential settling.
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Flanged Joints: ANSI/AWWA C115 threaded flanges rated PN 16, permitting precise alignment for valves and pre-fabricated assemblies.
International Standards
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ISO 2531 / EN 545 / EN 598: Wall thickness, raw materials, mechanical testing (min. elongation 7% for K12).
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AWWA C151/A21.51 & C153/A21.53: Centrifugally cast DI pipe & compact fittings for potable, raw, and reclaimed water.
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AWWA C111/A21.11: Rubber-gasket joint requirements for push-on and mechanical systems.
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AWWA C115/A21.15: Flanged pipe specifications.
Advantages
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High Strength: Base material GGG50 offers tensile strength > 420 MPa, suitable for surge and external loads.
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Ductility & Flexibility: ≥ 7% elongation prevents cracking under ground movement, outperforming gray cast iron.
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Corrosion Resistance: Multi-layer coatings eliminate need for sleeving in most soils; cement lining protects internally.
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Hydraulic Efficiency: Large I.D. reduces pumping energy; cement lining maintains smooth flow over time.
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Ease of Maintenance: Re-usable and no hot works required on-site; joints can be disassembled without damage.
Frequently Asked Questions (FAQ)
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What is the wall thickness of Class K12 DN800?
15.6 mm (ISO 2531 formula: e = 12×(0.5 + 0.001×800)). -
What pressure rating does it support?
PN 16 (1.6 MPa) per EN 545-2010 / ISO 2531-2009. -
Service life expectancy?
100 years in standard soils; up to 110 years in aggressive soils with sulfate-resistant lining.
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Available joints?
Tyton push-on (AWWA C111), mechanical (C111), and flanged (C115). -
Which standards govern manufacturing?
ISO 2531/EN 545/EN 598, AWWA C151/A21.51, C153/A21.53, C111/A21.11, C115/A21.15.
Case Studies
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Nîmes, France Water Main Renewal: Replaced 150-year-old cast iron mains with DN800 ductile iron using UltraGrip® flange adaptors, preserving historic trench lines under 7 bar operation.
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Australian Bulk Water Supply: PAM Zinalium® DN800–DN2200 installed in varied soil conditions with no sleeving, demonstrating leak-free performance over 20 years.
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DIPRA Utility Rehabilitation: U.S. municipalities leveraged push-on K12 pipes for trenchless rehabilitation, cutting outages by 40% and extending network lifespans.
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 | ….. |
