{"id":1988,"date":"2025-04-24T14:00:32","date_gmt":"2025-04-24T06:00:32","guid":{"rendered":"https:\/\/www.ductileironsuppliers.com\/?post_type=product&p=1988"},"modified":"2025-04-24T14:00:32","modified_gmt":"2025-04-24T06:00:32","slug":"class-k12-dn450-ductile-iron-pipe-suppliers","status":"publish","type":"product","link":"https:\/\/www.ductileironsuppliers.com\/ar\/product\/class-k12-dn450-ductile-iron-pipe-suppliers","title":{"rendered":"\u0645\u0648\u0631\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 K12 DN450"},"content":{"rendered":"

The Class K12 DN450 Ductile Iron Pipe<\/strong> delivers a robust, long-term solution for medium- to high-pressure water, sewage, and industrial networks. Engineered to ISO 2531\/EN 545 standards, its K12 thickness class sustains operating pressures up to 16 bar while accommodating angular deflections during ground movement. The nominal DN450 (\u00d8 450 mm) size strikes a balance between large flow capacity and manageable handling, making it ideal for both urban distribution and rural irrigation schemes. With cement\u2010mortar internal lining (ISO 4179) and zinc\/bitumen or epoxy external coatings (ISO 8179), these pipes resist corrosion in aggressive soils, ensuring an expected service life beyond 100 years under normal conditions. Installation leverages push-on or restrained K-type mechanical joints for rapid, leak-free assembly without special bedding. Competitive pricing\u2014US $439\u2013558 per ton for K12 class\u2014positions DN450 pipes as a cost-effective choice when life-cycle costs are considered.<\/p>\n

Application Scenarios<\/h2>\n

Ductile iron DN450 K12 pipes are extensively used in municipal water-supply networks<\/strong>, where they transport potable water under pressures up to 16 bar in compliance with BS EN 545. Their high safety factor and resilience to ground settlement make them suitable for sewerage and pressure-sewer systems<\/strong>, conforming to BS EN 598, and for agricultural irrigation<\/strong>, where long-term durability and minimal downtime are critical. In industrial and power facilities<\/strong>, DN450 pipes serve cooling-water circuits, mine-dewatering lines, and chemical-process feeds, benefiting from ductile iron\u2019s superior tensile strength (\u2265 270 MPa) and elongation (\u2265 7 %) characteristics.<\/p>\n

Service Life & Durability<\/h2>\n

Modern ductile iron pipes deliver 100+ years of service<\/strong> under typical operating conditions, as validated by manufacturer warranties and field data. The cement-mortar lining<\/strong> (ISO 4179) prevents internal corrosion, while zinc bitumen or epoxy-ceramic coatings<\/strong> (ISO 8179) protect against external chemical attack. In highly aggressive soils, polyethylene sleeving<\/strong> per ANSI\/AWWA C105\/A21.5 adds another layer of defense, virtually eliminating pitting and extending lifespan beyond a century .<\/p>\n

Laying & Connection<\/h2>\n

Mechanical K-Type Joints<\/h3>\n

Class K12 pipes incorporate integral sockets<\/strong> with resilient SBR\/NBR\/EPDM gaskets, allowing push-on assembly<\/strong> with no flange bolts. This \u201cTyton\u201d or K-Type joint enables \u00b15\u00b0 angular deflection<\/strong> per joint to absorb ground movements and reduces installation time by up to 30 % compared to flanged systems.<\/p>\n

Restrained & Flanged Options<\/h3>\n

For thrust-resistant installations (e.g., steep grades, anchor blocks), restrained-joint<\/strong> variants lock the spigot to the socket via cast-on lugs and mechanical restraints (EN 545). Flanged ends<\/strong> to EN 1092-2 can be specified for above-ground or maintenance-intensive settings, ensuring rapid removal and replacement of segments.<\/p>\n

Compliance with International Standards<\/h2>\n

Class K12 DN450 pipes adhere to:<\/p>\n

    \n
  • \n

    ISO 2531<\/strong> (ductile iron pipes, fittings, accessories)<\/p>\n<\/li>\n

  • \n

    EN 545<\/strong> (water pipelines) and EN 598<\/strong> (sewerage)<\/p>\n<\/li>\n

  • \n

    ISO 4179<\/strong> (cement-mortar lining) and ISO 8179<\/strong> (external coatings)<\/p>\n<\/li>\n

  • \n

    ISO 9001<\/strong>-certified manufacturing, with pressure & deflection tests at 1.5\u00d7 PN rating .<\/p>\n<\/li>\n<\/ul>\n

    Price Comparison with Other Series<\/h2>\n
    \n

     <\/p>\n

    \n\n\n\n\n\n\n\n\n\n
    Thickness Class<\/th>\nPrice Range (USD\/ton)<\/th>\nSource<\/th>\n<\/tr>\n<\/thead>\n
    K7<\/strong><\/td>\n600 (1\u201324 t), 500 (25\u201399 t), 400 (100 t+)<\/td>\nalibaba<\/td>\n<\/tr>\n
    K9<\/strong><\/td>\n600 (1\u201324 t), 500 (25\u201399 t), 400 (100 t+)<\/td>\nalibaba<\/td>\n<\/tr>\n
    K12<\/strong> (DN450)<\/td>\n439 \u2013 558 (1 t FOB Tianjin)<\/td>\nalibaba<\/td>\n<\/tr>\n
    C25<\/strong><\/td>\n600 (1\u201324 t), 500 (25\u201399 t), 400 (100 t+)<\/td>\nalibaba<\/td>\n<\/tr>\n
    C40<\/strong><\/td>\n600 (1\u201324 t), 500 (25\u201399 t), 400 (100 t+)<\/td>\nalibaba<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

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

      High Pressure Capability:<\/strong> PN 16 rating for reliable delivery in large networks<\/p>\n<\/li>\n

    • \n

      Superior Ductility & Strength:<\/strong> GGG50 iron with Rp0.2 \u2265 270 MPa and A \u2265 7 %<\/p>\n<\/li>\n

    • \n

      Exceptional Corrosion Resistance:<\/strong> Multi-layer linings & coatings plus PE sleeving options<\/p>\n<\/li>\n

    • \n

      Ease of Installation:<\/strong> Push-on mechanical joints reduce labor and trenching time<\/p>\n<\/li>\n

    • \n

      Low Life-Cycle Cost:<\/strong> Minimal maintenance and long service life offset initial investment<\/p>\n<\/li>\n<\/ul>\n

      Frequently Asked Questions<\/h2>\n

      Q1: What pressures can K12 DN450 handle?<\/strong>
      Up to 16 bar (PN 16) at ambient temperatures; hydrostatic testing at 1.5\u00d7 PN confirms integrity.<\/p>\n

      Q2: How do I choose between push-on and restrained joints?<\/strong>
      Use push-on for straight runs in stable soils; choose restrained or flanged when seismic activity, high thrust, or maintenance access are concerns.<\/p>\n

      Q3: Are all joint gaskets compatible with potable water?<\/strong>
      Yes\u2014EPDM\/SBR\/NBR gaskets comply with WRAS, NSF 61, and other potable-water approvals.<\/p>\n

      Case Studies<\/h2>\n
        \n
      • \n

        Central Arkansas Water (USA):<\/strong> Switched to ductile iron for new DN450 sections, reporting ease of assembly (bell & spigot, mechanical, flanged), pressure tests to 225 psi, and minimal handling damage versus PVC\/HDPE .<\/p>\n<\/li>\n

      • \n

        Arizona Water Service Utilities:<\/strong> Prohibited PVC in urban networks and standardized on ductile iron, citing long-term reliability and reduced leak incidents.<\/p>\n<\/li>\n

      • \n

        EPD International (2025):<\/strong> Documented DN450 use in potable, industrial, irrigation, and pressure-sewer applications, highlighting environmental benefits and recyclability.<\/p>\n<\/li>\n<\/ul>\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":1989,"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-1988","product","type-product","status-publish","has-post-thumbnail","hentry","products-ductile-iron-pipes"],"acf":[],"yoast_head":"\nClass K12 DN450 ductile iron pipe suppliers - Jingang LuoKaiwei<\/title>\n<meta name=\"description\" content=\"Explore Class K12 DN450 ductile iron pipe: ISO 2531\/EN 545 certified, 100+ year life, PN 16 pressure, K-type joints, and competitive pricing. 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