{"id":1976,"date":"2025-04-24T11:20:03","date_gmt":"2025-04-24T03:20:03","guid":{"rendered":"https:\/\/www.ductileironsuppliers.com\/?post_type=product&p=1976"},"modified":"2025-04-24T11:20:03","modified_gmt":"2025-04-24T03:20:03","slug":"class-k12-dn150-ductile-iron-pipe-suppliers","status":"publish","type":"product","link":"https:\/\/www.ductileironsuppliers.com\/ar\/product\/class-k12-dn150-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 K12 DN150"},"content":{"rendered":"

Class K12 DN150 ductile iron pipe delivers robust performance with a 150 mm nominal diameter<\/strong> and a 12 bar working pressure<\/strong>, tailored for demanding water, wastewater, fire protection, and industrial applications. Its cement-mortar internal lining<\/strong> and fusion-bonded epoxy or bitumen external coatings<\/strong> ensure superior corrosion resistance and hydraulic capacity over decades. Independent studies by DIPRA confirm an anticipated service life exceeding 100 years<\/strong>, significantly outlasting alternatives such as PVC or HDPE. Installation is streamlined via push-on<\/strong>, mechanical<\/strong>, or self-restraining joints<\/strong>, accommodating trench and trenchless methods while maintaining leak-tight integrity. Full compliance with ISO 2531<\/strong>, EN 545<\/strong>, and EN 598<\/strong> guarantees global compatibility and easy procurement.<\/p>\n

Application Scenarios<\/h2>\n

Municipal and industrial users choose DN150 K12 pipes for:<\/p>\n

    \n
  • \n

    Potable Water Distribution:<\/strong> Smooth lining resists biofilm and scaling, ensuring safe supply to residential and commercial zones.<\/p>\n<\/li>\n

  • \n

    Wastewater & Sewer Force Mains:<\/strong> High strength and abrasion resistance reduce sediment buildup and extend maintenance intervals.<\/p>\n<\/li>\n

  • \n

    Fire Protection Networks:<\/strong> 12 bar rating delivers rapid, high-flow performance for hydrants and sprinkler systems.<\/p>\n<\/li>\n

  • \n

    Industrial Process Lines:<\/strong> Durable under variable temperatures and pressures for cooling, process water, and effluent handling.<\/p>\n<\/li>\n

  • \n

    Trenchless & Subaqueous Installations:<\/strong> Coatings and ductility protect against soil movement, stray currents, and underwater corrosion.<\/p>\n<\/li>\n<\/ul>\n

    Service Life<\/h2>\n

    Long-term value stems from:<\/p>\n

      \n
    • \n

      Century-plus Longevity:<\/strong> Utilities in the Cast Iron Pipe Century Club attest to 100\u2013125 years of reliable service.<\/p>\n<\/li>\n

    • \n

      Lifecycle Cost Savings:<\/strong> A 2012 Black & Veatch analysis projects millions in net present value savings over alternative materials, driven by reduced energy and maintenance costs.<\/p>\n<\/li>\n<\/ul>\n

      Installation & Jointing<\/h2>\n

      Push-On Joints<\/h3>\n
        \n
      • \n

        EPDM-gasketed bell-and-spigot assemblies enable rapid, tool-light connections in tight workspaces.<\/p>\n<\/li>\n<\/ul>\n

        Mechanical (Flanged) Joints<\/h3>\n
          \n
        • \n

          Bolted couplings provide axial restraint and elevated pressure capabilities (up to PN25), ideal for high-pressure zones and easy disassembly.<\/p>\n<\/li>\n<\/ul>\n

          Self-Restrained Joints<\/h3>\n
            \n
          • \n

            Integral locking lugs in the bell eliminate external thrust blocks, reducing excavation and installation time on directional changes.<\/p>\n<\/li>\n<\/ul>\n

            Polyethylene encasement<\/strong> (Method A) wraps each barrel and joint, blocking stray currents and corrosive agents.<\/p>\n

            International Standards<\/h2>\n

            Class K12 DN150 pipes meet or exceed:<\/p>\n

              \n
            • \n

              ISO 2531:2015<\/strong> \u2013 Dimensions, testing, linings for water pipelines.<\/p>\n<\/li>\n

            • \n

              EN 545:2010<\/strong> \u2013 Pipes and fittings for water supply.<\/p>\n<\/li>\n

            • \n

              EN 598:2007<\/strong> \u2013 Sewerage pipes and fittings, including force mains.<\/p>\n<\/li>\n

            • \n

              ASTM A 536 \/ A 21.51<\/strong> \u2013 Ductile iron material and pressure-class specifications.<\/p>\n<\/li>\n

            • \n

              GB 13295-2019<\/strong> \u2013 Chinese national standard for ductile iron pipes and coatings.<\/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
              Series \/ Class<\/th>\nDN 150 Price (USD\/m)<\/th>\nSource<\/th>\n<\/tr>\n<\/thead>\n
              Class K9<\/strong><\/td>\n300 \u2013 400<\/td>\nAlibaba \u2013 seamless DI pipe RN150<\/td>\n<\/tr>\n
              Class K12<\/strong><\/td>\n325 \u2013 450<\/td>\nMade-in-China \u2013 ductile cast iron DN150<\/td>\n<\/tr>\n
              PN10 (C25)<\/strong><\/td>\n280 \u2013 350<\/td>\nISO 2531 listing (C25 series)<\/td>\n<\/tr>\n
              PN16 (C30)<\/strong><\/td>\n360 \u2013 480<\/td>\nISO 2531 listing (C30 series)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
              \n

              Prices vary by coating, joint type, volume, and region; consult local suppliers for exact quotations.<\/em><\/p>\n<\/blockquote>\n

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

                Durability:<\/strong> Over 100 years of proven service minimizes replacements and service interruptions.<\/p>\n<\/li>\n

              • \n

                High Pressure Capacity:<\/strong> 12 bar rating covers fire mains and industrial demands without upsizing.<\/p>\n<\/li>\n

              • \n

                Corrosion Protection:<\/strong> Cement-mortar lining plus epoxy\/bitumen coatings guard internal and external surfaces.<\/p>\n<\/li>\n

              • \n

                Installation Flexibility:<\/strong> Multiple jointing methods and encasement options suit trench, trenchless, and seismic projects.<\/p>\n<\/li>\n

              • \n

                Sustainability:<\/strong> High recycled content and full recyclability support environmental and circular-economy goals.<\/p>\n<\/li>\n<\/ul>\n

                Frequently Asked Questions<\/h2>\n

                Q1: What does \u201cDN150\u201d mean?<\/strong>
                A: \u201cDN150\u201d refers to a nominal internal diameter of 150 mm, as defined by ISO 3 standards.<\/p>\n

                Q2: Why choose Class K12 over K9?<\/strong>
                A: K12 offers a higher working pressure (12 bar vs. 9 bar) and thicker walls for more demanding applications.<\/p>\n

                Q3: Are these pipes suitable for trenchless installation?<\/strong>
                A: Yes\u2014ductile iron\u2019s flexibility, weight, and self-restraining joints make DN150 K12 ideal for HDD and microtunneling.<\/p>\n

                Q4: How is leak tightness maintained?<\/strong>
                A: EPDM gaskets in push-on joints, gland plates in mechanical joints, and integrated restraints in self-restrained joints ensure leak-proof connections.<\/p>\n

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

                  California Utility Upgrade:<\/strong> A major California water district replaced aging mains with Class K12 DN150, achieving a 70% reduction in break rates and saving $5 million in maintenance over 15 years.<\/p>\n<\/li>\n

                • \n

                  Energy Savings Analysis:<\/strong> A Black & Veatch report highlights $17 million present-value savings over 50 years for ductile iron mains versus HDPE, driven by lower energy and repair costs.<\/p>\n<\/li>\n

                • \n

                  European Renewal Project:<\/strong> Multiple European municipalities switched to DN150 K12 pipes, reporting zero failures and improved hydraulic performance after 20 years in service.<\/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":1977,"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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