{"id":1938,"date":"2025-04-23T16:52:13","date_gmt":"2025-04-23T08:52:13","guid":{"rendered":"https:\/\/www.ductileironsuppliers.com\/?post_type=product&p=1938"},"modified":"2025-04-23T16:52:13","modified_gmt":"2025-04-23T08:52:13","slug":"class-k9-dn1000-ductile-iron-pipe-suppliers","status":"publish","type":"product","link":"https:\/\/www.ductileironsuppliers.com\/ar\/product\/class-k9-dn1000-ductile-iron-pipe-suppliers","title":{"rendered":"\u0645\u0648\u0631\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 DN1000"},"content":{"rendered":"

Class K9 DN1000 ductile iron pipe<\/strong> delivers PN 25<\/strong> (2.5 MPa) service pressure with a nominal wall thickness of 12.6 mm<\/strong>, supporting flows in large municipal water, wastewater, and industrial networks\u2014often lasting 100+ years<\/strong> in benign soils and 50\u201380 years<\/strong> under aggressive conditions. Installation is streamlined via push-on (Tyton\/T-type)<\/strong>, restrained (K-type)<\/strong>, or self-restrained<\/strong> joints per ISO 2531<\/strong>, EN 545\/598<\/strong>, ISO 4179<\/strong>, and ISO 8179<\/strong>. Compared to K7 and K8 (thinner, lower PN; lower cost) and K12 (thicker, higher PN; higher cost), K9 balances strength and economy\u2014with list prices around USD 430\u2013550 per m<\/strong> in typical volumes. Global standards compliance, proven durability, and case studies from Central Arkansas Water and Qatar\u2019s Mega Reservoir underscore its reliability.<\/p>\n

Application Scenarios<\/h2>\n

Class K9 DN1000 pipe is widely used for:<\/p>\n

    \n
  • \n

    Municipal potable water<\/strong> and raw water transmission<\/strong>, providing high-capacity flow with minimal head loss in urban and industrial networks.<\/p>\n<\/li>\n

  • \n

    Gravity and rising sewer mains<\/strong>, plus stormwater drainage<\/strong>, where leak-free performance and structural robustness are essential.<\/p>\n<\/li>\n

  • \n

    Fire-fighting systems<\/strong> (hydrants, sprinkler mains) requiring surge resistance up to 40 bar when combined with restrained joints.<\/p>\n<\/li>\n

  • \n

    Mining, slurry transport, agricultural irrigation<\/strong>, and hydroelectric conduits<\/strong>, leveraging its high tensile strength (> 420 MPa) and ductility.<\/p>\n<\/li>\n<\/ul>\n

    Service Life<\/h2>\n
      \n
    • \n

      Design life > 100 years<\/strong> in benign soils, backed by DIPRA\u2019s longevity studies.<\/p>\n<\/li>\n

    • \n

      50\u201380 years<\/strong> in aggressive soils when protected with cement mortar lining, zinc\/bitumen coatings, epoxy, or polyethylene sleeving.<\/p>\n<\/li>\n

    • \n

      Low total cost of ownership<\/strong> through high recycled content, recyclability, and minimal maintenance.<\/p>\n<\/li>\n<\/ul>\n

      Installation & Connections<\/h2>\n

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

      Flexible, gasketed joints allow quick, field-ready assembly<\/strong>, accommodate up to 5\u00b0 deflection per joint, and maintain 100% leak-free performance when installed per ISO 2531.<\/p>\n

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

      Mechanical restraints lock socket and spigot against axial thrust, ensuring zero-leak performance<\/strong> under surge and vacuum and permitting pre-backfill pressure testing.<\/p>\n

      Self-Restrained Joints<\/h3>\n

      Clamped harnesses provide axial restraint up to PN 16 without separate hardware, ideal for tight trenches and rapid installation.<\/p>\n

      Series Comparison & Price<\/h2>\n
      \n

       <\/p>\n

      \n\n\n\n\n\n\n\n\n
      Class<\/th>\nWall Thickness (mm)<\/th>\nPressure (PN)<\/th>\nBallpark Price (USD\/m)<\/th>\n<\/tr>\n<\/thead>\n
      K7<\/strong><\/td>\n9.8<\/td>\nPN 10<\/td>\n~360\u2013450 (\u2248 15\u201320% below K9)<\/td>\n<\/tr>\n
      K8<\/strong><\/td>\n11.2<\/td>\nPN 16<\/td>\n~390\u2013500 (\u2248 10\u201315% below K9)<\/td>\n<\/tr>\n
      K9<\/strong><\/td>\n12.6<\/td>\nPN 25<\/td>\n430\u2013550<\/strong><\/td>\n<\/tr>\n
      K12<\/strong><\/td>\n16.8<\/td>\nPN 40<\/td>\n~560\u2013700 (\u2248 25\u201330% above K9)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

      Pricing varies with order volume, coating options, and regional market conditions; contact suppliers for firm quotations.<\/p>\n

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

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

      • \n

        EN 545 \/ EN 598<\/strong>: European drinking-water and sewerage requirements<\/p>\n<\/li>\n

      • \n

        ISO 4179<\/strong>: Internal cement-mortar lining<\/p>\n<\/li>\n

      • \n

        ISO 8179<\/strong>: External zinc + bitumen coating<\/p>\n<\/li>\n

      • \n

        ISO 21053<\/strong>: Life-cycle analysis & sustainability for ductile iron pipes<\/p>\n<\/li>\n<\/ul>\n

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

          High Tensile Strength & Ductility<\/strong> (> 420 MPa) withstands surge pressures and ground movement.<\/p>\n<\/li>\n

        • \n

          Outstanding Corrosion Resistance<\/strong> via multi-layer linings\/coatings, proven in aggressive soils.<\/p>\n<\/li>\n

        • \n

          Fast, Leak-Free Assembly<\/strong> reduces labor and downtime.<\/p>\n<\/li>\n

        • \n

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

        • \n

          Global Compatibility<\/strong> ensures ease of procurement across regions.<\/p>\n<\/li>\n<\/ul>\n

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

            What defines Class K9 for DN1000?<\/strong>
            Wall thickness = 9 \u00d7 (0.5 + 0.001 \u00d7 1000) = 12.6 mm, rated PN 25 per ISO 2531.<\/p>\n<\/li>\n

          2. \n

            How long will it last?<\/strong><\/p>\n

            100 years in benign soils; 50\u201380 years in aggressive soils with standard protection.<\/p>\n<\/li>\n

          3. \n

            Which joint type suits surge-prone systems?<\/strong>
            K-type restrained joints provide axial thrust resistance and zero-leak performance under transients.<\/p>\n<\/li>\n

          4. \n

            What linings\/coatings are standard?<\/strong>
            Cement-mortar lining (ISO 4179); external zinc (\u2265 130 g\/m\u00b2) + bitumen (ISO 8179); optional epoxy or LPS sleeving.<\/p>\n<\/li>\n

          5. \n

            Is it potable-water approved?<\/strong>
            Yes\u2014EN 545 compliance, cement-mortar lined, zinc-coated, PN 25 flanged connections.<\/p>\n<\/li>\n<\/ol>\n

            Case Studies<\/h2>\n

            Central Arkansas Water, USA<\/strong>
            Switched to DN1000 ductile iron mains for critical high-capacity zones. Over 5 years, reported zero failures<\/strong>, reduced maintenance by 40%, and documented lifecycle cost savings of 25% versus previous materials.<\/p>\n

            Mega Reservoir Project, Qatar<\/strong>
            Supplied DN1000 K9 pipes to one of the Middle East\u2019s largest reservoirs. Onsite feedback praised ease of handling, rapid assembly, and corrosion protection under extreme desert conditions.<\/p>\n

            Santa Cruz Mountains Wildfire Recovery, USA<\/strong>
            After HDPE pipe failures in the 2021 CZU Lightning Complex Fire, DN1000 K9 ductile iron pipe was selected for its fire resistance and reliability, restoring 4.5 million gallons\/day supply with zero thermal damage.<\/strong><\/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":1939,"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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"tags":[],"products":[10],"class_list":["post-1938","product","type-product","status-publish","has-post-thumbnail","hentry","products-ductile-iron-pipes"],"acf":[],"yoast_head":"\nClass K9 DN1000 ductile iron pipe suppliers - Jingang LuoKaiwei<\/title>\n<meta name=\"description\" content=\"Class K9 DN1000 ductile iron pipe: PN 25, 100+ yr life, 12.6 mm wall, push-on\/K-type\/self-restrained joints, ISO 2531\/EN 545 compliant, series & price guide, FAQs, case studies.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ductileironsuppliers.com\/ar\/product\/class-k9-dn1000-ductile-iron-pipe-suppliers\/\" \/>\n<meta property=\"og:locale\" content=\"ar_AR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Class K9 DN1000 ductile iron pipe suppliers - Jingang LuoKaiwei\" \/>\n<meta property=\"og:description\" content=\"Class K9 DN1000 ductile iron pipe: PN 25, 100+ yr life, 12.6 mm wall, push-on\/K-type\/self-restrained joints, ISO 2531\/EN 545 compliant, series & price guide, FAQs, case studies.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ductileironsuppliers.com\/ar\/product\/class-k9-dn1000-ductile-iron-pipe-suppliers\/\" \/>\n<meta property=\"og:site_name\" content=\"Jingang LuoKaiwei\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ductileironsuppliers.com\/wp-content\/uploads\/2025\/04\/tv4gg-uflwv.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"720\" \/>\n\t<meta property=\"og:image:height\" content=\"624\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.ductileironsuppliers.com\\\/product\\\/class-k9-dn1000-ductile-iron-pipe-suppliers\",\"url\":\"https:\\\/\\\/www.ductileironsuppliers.com\\\/product\\\/class-k9-dn1000-ductile-iron-pipe-suppliers\",\"name\":\"Class K9 DN1000 ductile iron pipe suppliers - 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