{"id":1887,"date":"2025-04-23T10:19:26","date_gmt":"2025-04-23T02:19:26","guid":{"rendered":"https:\/\/www.ductileironsuppliers.com\/?post_type=product&p=1887"},"modified":"2025-04-23T10:19:26","modified_gmt":"2025-04-23T02:19:26","slug":"class-k8-dn1000-ductile-iron-pipe-suppliers","status":"publish","type":"product","link":"https:\/\/www.ductileironsuppliers.com\/ar\/product\/class-k8-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 K8 DN1000"},"content":{"rendered":"

Class K8 DN1000 ductile iron pipe has a nominal wall thickness of 12.0 mm<\/strong>, calculated via ISO 2531\u2019s formula e = K \u00d7 (0.5 + 0.001 \u00d7 DN)<\/em> (K=8, DN=1000 mm) . Rated PN 12.5 (1.25 MPa)<\/strong>, it serves medium-pressure water, sewage, irrigation, gas and fire mains . Cement-mortar lining (ANSI\/AWWA C104) plus optional loose-fit polyethylene sleeving (ISO 8180) yield a design life exceeding 100 years<\/strong>, extending to 110 years<\/strong> in aggressive soils . Installation is rapid and leak-free via Tyton push-on, AWWA C111 mechanical and ANSI B16.1 flanged joints . In the K-series, nominal wall thickness climbs from 9.8 mm (K7)<\/strong> \u2192 12.0 mm (K8)<\/strong> \u2192 13.2 mm (K9)<\/strong> \u2192 17.6 mm (K12)<\/strong>, with K8 pricing typically US $885\u2013895 \/ ton<\/strong> (20\u201399 ton MOQ) .<\/p>\n

Applications<\/h2>\n

Ductile iron pipe is prized for:<\/p>\n

    \n
  • \n

    Potable Water Distribution:<\/strong> DN1000 mains deliver stable hydraulics and low leakage in large municipal networks .<\/p>\n<\/li>\n

  • \n

    Sewage & Drainage:<\/strong> Abrasion-resistant core and smooth cement-mortar lining convey grit-laden wastewater reliably .<\/p>\n<\/li>\n

  • \n

    Irrigation Systems:<\/strong> Uniform flow and surge resilience support large-scale agricultural supply lines .<\/p>\n<\/li>\n

  • \n

    Gas Distribution:<\/strong> When produced per BS EN 969 and externally coated, DN1000 K8 pipes safely convey natural gas up to 16 bar .<\/p>\n<\/li>\n

  • \n

    Fire-Protection Mains:<\/strong> High ductility and surge capacity ensure reliable hydrant loops and feeder mains .<\/p>\n<\/li>\n<\/ul>\n

    Service Life<\/h2>\n

    Modern ductile iron pipe outlasts most alternatives:<\/p>\n

      \n
    • \n

      Base Life:<\/strong> > 100 years in benign soils owing to its tough ferrous matrix .<\/p>\n<\/li>\n

    • \n

      Cement-Mortar Lining (CML):<\/strong> Internal lining per ANSI\/AWWA C104 guards against corrosion for > 100 years .<\/p>\n<\/li>\n

    • \n

      Polyethylene Sleeving:<\/strong> Loose-fit sleeving per ISO 8180 adds ~10 years in aggressive soils, validated by Everglades test sites .<\/p>\n<\/li>\n

    • \n

      Life-Cycle Savings:<\/strong> An AWWA study showed net savings of $47.68\/ft over PVC (24\u2033 Class 200 vs. PVC DR 18) and $17 million PV benefit over 50 years .<\/p>\n<\/li>\n<\/ul>\n

      Installation & Connection<\/h2>\n
        \n
      • \n

        Push-On (\u201cTyton\u201d) Joints:<\/strong> Spigot-socket with elastomeric gasket for bolt-free, rapid sealing per ISO 2531 .<\/p>\n<\/li>\n

      • \n

        Mechanical Joints:<\/strong> Gland-and-bolt restraint per AWWA C111 for both restrained and unrestrained connections .<\/p>\n<\/li>\n

      • \n

        Flanged Joints:<\/strong> ANSI B16.1 (Class 125) flanges allow disassembly and resist high axial loads .<\/p>\n<\/li>\n

      • \n

        Best Practices:<\/strong> 150 mm graded bedding, \u2264 3 % deflection, hydrostatic testing and chlorination per ISO 2531\/AWWA C600 ensure joint integrity .<\/p>\n<\/li>\n<\/ul>\n

        K-Series Comparison & Pricing<\/h2>\n
        \n

         <\/p>\n

        \n\n\n\n\n\n\n\n\n
        Class<\/th>\nNominal Wall Thickness<sup>1<\/sup><\/th>\nPressure Rating<\/th>\nPrice (USD\/ton)<sup>2<\/sup><\/th>\n<\/tr>\n<\/thead>\n
        K7<\/strong><\/td>\n9.8 mm = 7\u00d7(0.5+0.001\u00d71000)<\/td>\nPN 10 (1.0 MPa)<\/td>\n$850\u20131,000<\/td>\n<\/tr>\n
        K8<\/strong><\/td>\n12.0 mm = 8\u00d7(0.5+0.001\u00d71000)<\/td>\nPN 12.5 (1.25 MPa)<\/td>\n$885\u2013895 (20\u201399 ton MOQ)<\/td>\n<\/tr>\n
        K9<\/strong><\/td>\n13.2 mm = 9\u00d7(0.5+0.001\u00d71000)<\/td>\nPN 16 (1.6 MPa)<\/td>\n$950\u20131,050<\/td>\n<\/tr>\n
        K12<\/strong><\/td>\n17.6 mm = 12\u00d7(0.5+0.001\u00d71000)<\/td>\nPN 25 (2.5 MPa)<\/td>\n$1,100\u20131,300<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

        <sup>1<\/sup>Per ISO 2531 & GB\/T 13295 thickness formula.
        <sup>2<\/sup>Based on quoted FOB prices from Chinese suppliers (Made-in-China, Alibaba).<\/p>\n

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

          ISO 2531:2009 \/ GB\/T 13295-2019:<\/strong> Pipe dimensions, tolerances & joint performance.<\/p>\n<\/li>\n

        • \n

          ISO 8180:2020:<\/strong> Polyethylene sleeving for corrosion protection.<\/p>\n<\/li>\n

        • \n

          ANSI\/AWWA C104\/A21.4:<\/strong> Cement-mortar lining requirements .<\/p>\n<\/li>\n

        • \n

          ANSI\/AWWA C111\/A21.11:<\/strong> Mechanical-joint specifications.<\/p>\n<\/li>\n

        • \n

          ANSI B16.1:<\/strong> Flanged joint dimensions & ratings.<\/p>\n<\/li>\n

        • \n

          BS EN 969:2009:<\/strong> Gas-pipeline DI pipes, fittings & accessories.<\/p>\n<\/li>\n

        • \n

          ISO 1083:1997:<\/strong> Ductile iron grade JS I 350-22 mechanical properties (\u03c3b \u2265 350 MPa).<\/p>\n<\/li>\n<\/ul>\n

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

            Outstanding Durability:<\/strong> 100+ year service life minimizes lifecycle replacements .<\/p>\n<\/li>\n

          • \n

            High Strength & Toughness:<\/strong> Tensile \u2265 350 MPa resists surge and external loads .<\/p>\n<\/li>\n

          • \n

            Comprehensive Corrosion Control:<\/strong> Internal CML, zinc\/bitumen coatings & LPS .<\/p>\n<\/li>\n

          • \n

            Jointing Versatility:<\/strong> Push-on, mechanical, flanged & restrained options suit any installation .<\/p>\n<\/li>\n

          • \n

            Sustainability:<\/strong> Made from recycled iron, fully recyclable with low life-cycle energy use vs. plastics .<\/p>\n<\/li>\n<\/ul>\n

            FAQ<\/h2>\n

            Q1: How do K-series classes differ?<\/strong>
            They follow e = K (0.5 + 0.001 DN)<\/em>\u2014for DN1000, K7=9.8 mm, K8=12 mm, K9=13.2 mm, K12=17.6 mm, correlating to PN 10\/12.5\/16\/25 .<\/p>\n

            Q2: Which joint type is best?<\/strong>
            \u2013 Tyton push-on:<\/strong> Fast, bolt-free assembly
            \u2013 Mechanical:<\/strong> Restrained connections for valves\/fittings
            \u2013 Flanged:<\/strong> Easy disassembly & high axial-load capacity .<\/p>\n

            Q3: Is polyethylene sleeving necessary?<\/strong>
            Recommended in aggressive soils\u2014it adds ~10 years of protection, proven by Everglades tests .<\/p>\n

            Q4: What sizes & lengths are offered?<\/strong>
            DN 80\u20132600 mm in 6 m laying lengths (5.7 m for container loads), with custom cuts on request .<\/p>\n

            Q5: Can DIP be used in seismic areas?<\/strong>
            Yes\u2014restrained joints (tie-rod, ball-and-socket) absorb ground movement for seismic resilience .<\/p>\n

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

              AWWA LCCA (Huntsville, AL):<\/strong> 24\u2033 Class 200 vs PVC DR 18 net savings of $47.68\/ft<\/strong> and $17 million<\/strong> PV benefit over 50 years.<\/p>\n<\/li>\n

            • \n

              Everglades City, FL:<\/strong> LPS-encased pipes remained in \u201cexcellent condition\u201d after 10+ years<\/strong> in corrosive muck (140\u2013240 \u03a9\u00b7cm) at DIPRA test sites .<\/p>\n<\/li>\n

            • \n

              University of Michigan LCCA:<\/strong> Ductile iron mains showed lowest total lifecycle cost vs PVC, CI & steel in multiple climate zones.<\/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":1888,"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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