{"id":1930,"date":"2025-04-23T16:03:21","date_gmt":"2025-04-23T08:03:21","guid":{"rendered":"https:\/\/www.ductileironsuppliers.com\/?post_type=product&p=1930"},"modified":"2025-04-23T16:03:21","modified_gmt":"2025-04-23T08:03:21","slug":"class-k9-dn600-ductile-iron-pipe-suppliers","status":"publish","type":"product","link":"https:\/\/www.ductileironsuppliers.com\/ar\/product\/class-k9-dn600-ductile-iron-pipe-suppliers","title":{"rendered":"\u0645\u0648\u0631\u0650\u0651\u062f\u0648 \u0623\u0646\u0627\u0628\u064a\u0628 \u062d\u062f\u064a\u062f \u0627\u0644\u062f\u0643\u062a\u0627\u064a\u0644 \u0645\u0646 \u0627\u0644\u0641\u0626\u0629 K9 DN600"},"content":{"rendered":"

Ductile iron pipe Class K9 DN600 is primarily used in municipal water distribution<\/strong> for potable and raw water conveyance, as well as sewage<\/strong> and stormwater<\/strong> systems. Its robustness makes it ideal for industrial water networks<\/strong>, fire-fighting mains<\/strong>, and irrigation<\/strong> channels where reliability under pressure is critical.<\/p>\n

In high-demand applications<\/strong>\u2014such as skyscraper risers and hydroelectric conduits\u2014the DN600 size provides the flow capacity needed for large-scale operations, while maintaining efficient hydraulic performance.<\/p>\n

Service Life<\/h2>\n

Modern ductile iron pipe benefits from metallurgical improvements that deliver higher strength<\/strong> with reduced wall thickness<\/strong>, without sacrificing durability. Field studies indicate a design life of 100 years<\/strong> in benign soils, with well-maintained installations exceeding this benchmark.<\/p>\n

Corrosion protection<\/strong>\u2014via zinc coating, cement mortar lining, fusion-bonded epoxy, and optional polyethylene sleeving\u2014extends service life even in aggressive environments, often achieving 50\u201380 years<\/strong> without major maintenance.<\/p>\n

Installation & Connections<\/h2>\n

Push-On (Tyton) Joints<\/h3>\n

Flexible, gasketed push-on joints allow quick assembly<\/strong> without field welding, accommodating angular deflection up to 5\u00b0 per joint for DN600\u20131600.<\/p>\n

Restrained (K-Type) Joints<\/h3>\n

K-type restraining devices lock socket and spigot against axial movement, delivering zero-leak performance<\/strong> under high surge pressures and facilitating pre-laid testing<\/strong> before backfill.<\/p>\n

Flanged Connections<\/h3>\n

Flanged ends\u2014standardized to EN 1092-2\u2014enable easy integration<\/strong> with valves, fittings, and pump equipment, with rated pressures up to PN 25<\/strong>.<\/p>\n

Series Comparison & Price<\/h2>\n

Different K-classes correspond to varying wall thicknesses<\/strong> and pressure capacities<\/strong>. Below is a typical comparison for DN600:<\/p>\n

\n

 <\/p>\n

\n\n\n\n\n\n\n\n\n
Class<\/th>\nWall Thickness (mm)<\/th>\nNominal Pressure (PN)<\/th>\nApprox. Weight (kg\/m)<\/th>\nPrice Range (USD\/m)<\/th>\n<\/tr>\n<\/thead>\n
K7<\/td>\n26<\/td>\nPN 10<\/td>\n140<\/td>\n400 \u2013 500<\/td>\n<\/tr>\n
K8<\/td>\n29<\/td>\nPN 16<\/td>\n160<\/td>\n509 \u2013 540<\/td>\n<\/tr>\n
K9<\/td>\n32<\/td>\nPN 16\u201325<\/td>\n180<\/td>\n615 \u2013 665<\/td>\n<\/tr>\n
K12<\/td>\n38<\/td>\nPN 25\u201340<\/td>\n210<\/td>\n750 \u2013 850<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

Class selection balances cost<\/strong> against pressure rating<\/strong> and mechanical robustness<\/strong>.<\/p>\n

International Standards<\/h2>\n
    \n
  • \n

    ISO 2531<\/strong>: Ductile iron pipes, fittings, accessories, joints for water applications.<\/p>\n<\/li>\n

  • \n

    EN 545 \/ EN 598<\/strong>: European standards for drinking and wastewater pipes.<\/p>\n<\/li>\n

  • \n

    ISO 4179 \/ ISO 8179<\/strong>: Internal cement mortar lining and external zinc coating requirements.<\/p>\n<\/li>\n

  • \n

    ISO 21053<\/strong>: Life-cycle analysis and recycling evaluation for ductile iron pipes.<\/p>\n<\/li>\n<\/ul>\n

    Compliance ensures global acceptance<\/strong>, ease of cross-border procurement, and interchangeability<\/strong>.<\/p>\n

    Advantages<\/h2>\n
      \n
    • \n

      High Tensile Strength & Ductility<\/strong> withstands surge pressures and ground movement.<\/p>\n<\/li>\n

    • \n

      Long Service Life<\/strong> over 100 years in benign soils, 50\u201380 years in aggressive conditions.<\/p>\n<\/li>\n

    • \n

      Excellent Corrosion Resistance<\/strong> with proven zinc, epoxy, and mortar linings.<\/p>\n<\/li>\n

    • \n

      Environmentally Friendly<\/strong>: recycled content, fully recyclable at end-of-life.<\/p>\n<\/li>\n

    • \n

      Fast Installation<\/strong>: socketed, restrained, and flanged joints reduce downtime.<\/p>\n<\/li>\n<\/ul>\n

      FAQ<\/h2>\n
        \n
      1. \n

        What defines Class K9?<\/strong>
        A wall thickness of ~32 mm and pressure ratings PN 16\u201325, per ISO 2531.<\/p>\n<\/li>\n

      2. \n

        How long will DN600 K9 last?<\/strong>
        Typically 100 years in non-corrosive soils; 50\u201380 years with standard protection in aggressive soils.<\/p>\n<\/li>\n

      3. \n

        What coatings and linings are available?<\/strong>
        Portland cement mortar, sulfate-resistant lining (ISO 4179), internal epoxy, external zinc per ISO 8179, optional PE sleeving.<\/p>\n<\/li>\n

      4. \n

        Which joint type suits high-rise applications?<\/strong>
        Restrained K-type joints for surge-free, leak-proof service under varying loads.<\/p>\n<\/li>\n

      5. \n

        How to specify for potable water?<\/strong>
        Order per ISO 545, PN 16 flanged ends, cement-mortared interior, zinc exterior coating.<\/p>\n<\/li>\n<\/ol>\n

        Case Studies<\/h2>\n

        Berlin Water Supply Project, Germany<\/h3>\n

        15 km of DN600 K9 pipe installed in 2016 using ordinary Portland cement lining. Achieved zero leakage<\/strong> and maintained hydraulic efficiency in urban distribution.<\/p>\n

        Eastern Terrace Watermain Upgrade, New Zealand<\/h3>\n

        2455 m of DN600 mains improved supply reliability and reduced leakage by 30% for a suburban network.<\/p>\n

        ductile iron pipe dimensions<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
        <\/td>\n<\/td>\n<\/td>\nPipe body weight \uff08kg\/m)<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
        (Inside Diameter)<\/td>\n(Outside Diameter)<\/td>\nSocket Weight<\/td>\nK8<\/td>\nK9<\/td>\nK10<\/td>\nC class<\/td>\nTotal weight of Active Length=6M (kg)<\/td>\nTotal weight of Active Length=5.7M (kg)<\/td>\n<\/tr>\n
        DN(mm)<\/td>\nOD(mm)<\/td>\n\u2248 kg<\/td>\nClass<\/td>\nkg\/m<\/td>\nK8<\/td>\nK9<\/td>\nK10<\/td>\nC class<\/td>\nK8<\/td>\nK9<\/td>\nK10<\/td>\nC class<\/td>\n<\/tr>\n
        80<\/td>\n98<\/td>\n3.40<\/td>\n12.20<\/td>\n12.20<\/td>\n12.20<\/td>\nC40<\/td>\n9.10<\/td>\n77.00<\/td>\n77.00<\/td>\n77.00<\/td>\n58.00<\/td>\n73.00<\/td>\n73.00<\/td>\n73.00<\/td>\n55.00<\/td>\n<\/tr>\n
        100<\/td>\n118<\/td>\n4.30<\/td>\n14.90<\/td>\n15.10<\/td>\n15.10<\/td>\nC40<\/td>\n11.12<\/td>\n93.70<\/td>\n95.00<\/td>\n95.00<\/td>\n71.00<\/td>\n90.00<\/td>\n91.00<\/td>\n90.00<\/td>\n68.00<\/td>\n<\/tr>\n
        125<\/td>\n144<\/td>\n5.70<\/td>\n<\/td>\n18.90<\/td>\n<\/td>\nC40<\/td>\n<\/td>\n<\/td>\n119.00<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
        150<\/td>\n170<\/td>\n7.10<\/td>\n21.80<\/td>\n22.80<\/td>\n22.80<\/td>\nC40<\/td>\n16.48<\/td>\n138.00<\/td>\n144.00<\/td>\n144.00<\/td>\n106.00<\/td>\n132.00<\/td>\n138.00<\/td>\n137.00<\/td>\n101.00<\/td>\n<\/tr>\n
        200<\/td>\n222<\/td>\n10.30<\/td>\n28.70<\/td>\n30.60<\/td>\n30.60<\/td>\nC40<\/td>\n22.62<\/td>\n183.00<\/td>\n194.00<\/td>\n194.00<\/td>\n146.00<\/td>\n174.00<\/td>\n185.00<\/td>\n185.00<\/td>\n139.00<\/td>\n<\/tr>\n
        250<\/td>\n274<\/td>\n14.20<\/td>\n35.60<\/td>\n40.20<\/td>\n44.30<\/td>\nC40<\/td>\n32.63<\/td>\n228.00<\/td>\n255.00<\/td>\n280.00<\/td>\n210.00<\/td>\n218.00<\/td>\n244.00<\/td>\n267.00<\/td>\n200.00<\/td>\n<\/tr>\n
        300<\/td>\n326<\/td>\n18.90<\/td>\n45.30<\/td>\n50.80<\/td>\n56.30<\/td>\nC30<\/td>\n43.90<\/td>\n290.00<\/td>\n323.00<\/td>\n357.00<\/td>\n282.00<\/td>\n278.00<\/td>\n309.00<\/td>\n340.00<\/td>\n269.00<\/td>\n<\/tr>\n
        350<\/td>\n378<\/td>\n23.70<\/td>\n55.90<\/td>\n63.20<\/td>\n69.60<\/td>\nC30<\/td>\n51.88<\/td>\n359.00<\/td>\n403.00<\/td>\n441.00<\/td>\n335.00<\/td>\n343.00<\/td>\n384.00<\/td>\n420.00<\/td>\n319.00<\/td>\n<\/tr>\n
        400<\/td>\n429<\/td>\n29.50<\/td>\n67.30<\/td>\n75.50<\/td>\n83.70<\/td>\nC30<\/td>\n60.78<\/td>\n433.00<\/td>\n482.00<\/td>\n532.00<\/td>\n394.00<\/td>\n414.00<\/td>\n460.00<\/td>\n506.00<\/td>\n376.00<\/td>\n<\/tr>\n
        450<\/td>\n480<\/td>\n38.30<\/td>\n80.00<\/td>\n89.30<\/td>\n99.00<\/td>\nC30<\/td>\n73.30<\/td>\n515.00<\/td>\n575.00<\/td>\n632.00<\/td>\n472.00<\/td>\n492.00<\/td>\n550.00<\/td>\n597.00<\/td>\n450.00<\/td>\n<\/tr>\n
        500<\/td>\n532<\/td>\n42.80<\/td>\n92.80<\/td>\n104.30<\/td>\n115.60<\/td>\nC30<\/td>\n87.20<\/td>\n600.00<\/td>\n669.00<\/td>\n736.00<\/td>\n566.00<\/td>\n572.00<\/td>\n638.00<\/td>\n702.00<\/td>\n540.00<\/td>\n<\/tr>\n
        600<\/td>\n635<\/td>\n59.30<\/td>\n122.00<\/td>\n137.30<\/td>\n152.00<\/td>\nC30<\/td>\n120.62<\/td>\n791.00<\/td>\n882.00<\/td>\n971.00<\/td>\n783.00<\/td>\n755.00<\/td>\n842.00<\/td>\n926.00<\/td>\n747.00<\/td>\n<\/tr>\n
        700<\/td>\n738<\/td>\n79.10<\/td>\n155.00<\/td>\n173.90<\/td>\n193.00<\/td>\nC25<\/td>\n142.15<\/td>\n1009.00<\/td>\n1123.00<\/td>\n1237.00<\/td>\n932.00<\/td>\n963.00<\/td>\n1071.00<\/td>\n1179.00<\/td>\n889.00<\/td>\n<\/tr>\n
        800<\/td>\n842<\/td>\n102.60<\/td>\n192.00<\/td>\n215.20<\/td>\n239.00<\/td>\nC25<\/td>\n177.07<\/td>\n1255.00<\/td>\n1394.00<\/td>\n1537.00<\/td>\n1165.00<\/td>\n1197.00<\/td>\n1330.00<\/td>\n1465.00<\/td>\n1112.00<\/td>\n<\/tr>\n
        900<\/td>\n945<\/td>\n129.60<\/td>\n232.00<\/td>\n260.20<\/td>\n289.00<\/td>\nC25<\/td>\n197.68<\/td>\n1521.00<\/td>\n1691.00<\/td>\n1863.00<\/td>\n1446.00<\/td>\n1452.00<\/td>\n1613.00<\/td>\n1777.00<\/td>\n1257.00<\/td>\n<\/tr>\n
        1000<\/td>\n1048<\/td>\n161.30<\/td>\n275.00<\/td>\n309.30<\/td>\n343.20<\/td>\nC25<\/td>\n266.28<\/td>\n1811.00<\/td>\n2017.00<\/td>\n2221.00<\/td>\n1759.00<\/td>\n1729.00<\/td>\n1925.00<\/td>\n2118.00<\/td>\n1679.00<\/td>\n<\/tr>\n
        1100<\/td>\n1152<\/td>\n194.70<\/td>\n<\/td>\n362.80<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n2372.00<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
        1200<\/td>\n1255<\/td>\n237.70<\/td>\n374.00<\/td>\n420.10<\/td>\n466.10<\/td>\nC25<\/td>\n373.88<\/td>\n2482.00<\/td>\n2758.00<\/td>\n3034.00<\/td>\n2481.00<\/td>\n2370.00<\/td>\n2632.00<\/td>\n2894.00<\/td>\n2369.00<\/td>\n<\/tr>\n
        1400<\/td>\n1462<\/td>\n279.30<\/td>\n<\/td>\n547.20<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n3563.00<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        ductile iron pipe\u00a0Mechanical property<\/h2>\n\n\n\n\n\n\n\n\n\n
        Mechanical Property<\/td>\n<\/tr>\n
        Nominal Diameter<\/td>\nHydraulic test<\/td>\nTensile strength<\/td>\nElogation<\/td>\nYield strength<\/td>\nBending strength<\/td>\nBrinell hardness<\/td>\nThickness of cement lining<\/td>\n<\/tr>\n
        DN(MM)<\/td>\nMpa<\/td>\nMpa<\/td>\n%<\/td>\nMpa<\/td>\nMpa<\/td>\nHB<\/td>\nmm<\/td>\n<\/tr>\n
        DN80-DN300<\/td>\n5<\/td>\n\u2265420<\/td>\n\u226510<\/td>\n\u2265300<\/td>\n\u2265590<\/td>\n\u2264230<\/td>\n3<\/td>\n<\/tr>\n
        DN350-DN600<\/td>\n4<\/td>\n\u2265420<\/td>\n\u226510<\/td>\n\u2265300<\/td>\n\u2265590<\/td>\n\u2264230<\/td>\n5<\/td>\n<\/tr>\n
        DN700-DN1000<\/td>\n3.2<\/td>\n\u2265420<\/td>\n\u226510<\/td>\n\u2265300<\/td>\n\u2265590<\/td>\n\u2264230<\/td>\n6<\/td>\n<\/tr>\n
        DN1100-DN1600<\/td>\n2.5<\/td>\n\u2265420<\/td>\n\u22657<\/td>\n\u2265300<\/td>\n\u2265590<\/td>\n\u2264230<\/td>\n\u2026..<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":1931,"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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