{"id":2071,"date":"2025-04-25T14:29:03","date_gmt":"2025-04-25T06:29:03","guid":{"rendered":"https:\/\/www.ductileironsuppliers.com\/?post_type=product&p=2071"},"modified":"2025-04-25T14:29:03","modified_gmt":"2025-04-25T06:29:03","slug":"8-inch-ductile-iron-pipe-outside-diameter-in-mm","status":"publish","type":"product","link":"https:\/\/www.ductileironsuppliers.com\/ar\/product\/8-inch-ductile-iron-pipe-outside-diameter-in-mm","title":{"rendered":"\u0623\u0646\u0628\u0648\u0628 \u062d\u062f\u064a\u062f \u0627\u0644\u062f\u0643\u062a\u0627\u064a\u0644 \u0645\u0642\u0627\u0633 8 \u0628\u0648\u0635\u0629 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062e\u0627\u0631\u062c\u064a \u0628\u0627\u0644\u0645\u0644\u064a\u0645\u062a\u0631"},"content":{"rendered":"

an 8 in. nominal ductile iron pipe has a standardized outside diameter of 9.05 in. (229.87 mm)<\/strong>, offers over 100 years<\/strong> of reliable service thanks to its nodular-graphite strength and cement-mortar lining, and meets both AWWA C151\/A21.51<\/strong> and ISO 2531\/EN 545<\/strong> dimensional standards. Its high pressure ratings (up to 350 psi), robust corrosion protection, and flexible joint designs (push-on, mechanical, flanged) make it ideal for potable water, wastewater, irrigation, and industrial systems.<\/p>\n

Application Scenarios<\/h2>\n

Ductile iron pipe is widely used for municipal potable water transmission and distribution<\/strong>, ensuring safe, high-capacity flow in trunk and lateral lines.
It serves wastewater and sewage mains<\/strong>, where cement-mortar linings and external coatings resist corrosive effluents in gravity and pressure systems.
In irrigation and industrial applications<\/strong>, these pipes handle high pressures and various media\u2014from agricultural networks to chemical plants and fire-protection mains.<\/p>\n

Service Life<\/h2>\n

Modern ductile iron pipelines routinely exceed 100 years<\/strong> of service under normal conditions.
This longevity is achieved through recycled-content metallurgy, energy-efficient casting, and cement-mortar linings that virtually eliminate internal corrosion.<\/p>\n

Advantages<\/h2>\n
    \n
  • \n

    Exceptional Strength<\/strong>: The spheroidal graphite microstructure provides twice the tensile strength of gray iron, supporting pressure classes up to 350 psi.<\/p>\n<\/li>\n

  • \n

    Corrosion Protection<\/strong>: Standard cement-mortar lining plus bonded zinc, asphaltic coatings, or optional polyethylene sleeving guard against both soil and water corrosion.<\/p>\n<\/li>\n

  • \n

    Life-Cycle Cost Efficiency<\/strong>: Over a century, ductile iron pipe incurs lower total ownership and maintenance costs compared to plastic alternatives.<\/p>\n<\/li>\n

  • \n

    Joint Flexibility<\/strong>: Push-on (Tyton\u00ae), mechanical, and flanged connections allow angular deflection and restrained systems to accommodate seismic shifts and ground movement.<\/p>\n<\/li>\n<\/ul>\n

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

      ANSI\/AWWA C151\/A21.51<\/strong> specifies dimensions and pressure classes for 3″\u201364″ centrifugally cast pipe in North America.<\/p>\n<\/li>\n

    • \n

      ISO 2531 \/ EN 545 \/ EN 598<\/strong> cover pipes, fittings, and joints for water and sewer applications in metric regions.<\/p>\n<\/li>\n

    • \n

      Regional Norms<\/strong>: AS\/NZS 2280 (Australia\/New Zealand) and GB\/T 13295 (China) ensure local compliance and interoperability .<\/p>\n<\/li>\n<\/ul>\n

      OD Comparison Table<\/h2>\n
      \n

       <\/p>\n

      \n\n\n\n\n\n\n\n\n\n
      Nominal Size<\/th>\nOD (in)<\/th>\nOD (mm)<\/th>\n<\/tr>\n<\/thead>\n
      4 inch<\/td>\n4.80<\/td>\n121.92<\/td>\n<\/tr>\n
      6 inch<\/td>\n6.90<\/td>\n175.26<\/td>\n<\/tr>\n
      8 inch<\/td>\n9.05<\/td>\n229.87<\/td>\n<\/tr>\n
      10 inch<\/td>\n11.10<\/td>\n281.94<\/td>\n<\/tr>\n
      12 inch<\/td>\n13.20<\/td>\n335.28<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

      Standard ODs per AWWA C151 and BS EN 545.<\/em><\/p>\n

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

        Push-On (Tyton\u00ae) Joints<\/strong>: Offer watertight, quick-assembly connections with up to 5\u00b0 deflection per joint.<\/p>\n<\/li>\n

      • \n

        Mechanical Joints<\/strong>: Bolted glands provide positive restraint for high-pressure, seismic, or deep-burial conditions.<\/p>\n<\/li>\n

      • \n

        Flanged Ends<\/strong>: Conform to ANSI\/AWWA C115 and BS EN 1092-2 PN16 for direct bolting to valves and pumps.<\/p>\n<\/li>\n

      • \n

        Backfill Recommendations<\/strong>: Use non-corrosive, compacted granular material (max 2\u2033 particle size) per ANSI\/AWWA C600 guidelines.<\/p>\n<\/li>\n<\/ul>\n

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

          What pressure classes are available for 8\u2033 DIP?<\/strong>
          Standard classes range from 150 psi to 350 psi, depending on wall thickness per AWWA C151.<\/p>\n<\/li>\n

        2. \n

          Is polyethylene encasement required?<\/strong>
          In corrosive soils, loose polyethylene sleeving per ANSI\/AWWA C105 is recommended for added external protection.<\/p>\n<\/li>\n

        3. \n

          How should trench backfill be prepared?<\/strong>
          Bedding and backfill must comply with ANSI\/AWWA C600\u2014typically granular material compacted to ~90% Proctor density.<\/p>\n<\/li>\n

        4. \n

          Are fittings standardized?<\/strong>
          Tees, bends, and reducers follow ISO 2531\/EN 545 dimensions and are offered in push-on, mechanical, or flanged ends.<\/p>\n<\/li>\n<\/ol>\n

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

            City of Peoria WAS Force Main<\/strong>: A 13,463 ft 8\u2033 DIP force main installed in 1999 carried waste activated sludge with minimal maintenance until corrosion testing in 2020 prompted targeted rehabilitation.<\/p>\n<\/li>\n

          • \n

            Arizona PVC Ban<\/strong>: Eight major Arizona water districts, including Phoenix and Mesa, mandate DIP only\u2014citing life-cycle value and resilience over PVC alternatives.<\/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":2072,"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-2071","product","type-product","status-publish","has-post-thumbnail","hentry","products-ductile-iron-pipes"],"acf":[],"yoast_head":"\n8 inch ductile iron pipe outside diameter in mm - 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