\nMunicipal Water Supply:<\/strong> Commonly used in drinking-water mains up to DN 1200 mm, K12 pipes handle pressures up to 16 bar, ensuring safe, clean delivery to homes and businesses .<\/p>\n<\/li>\n\nSewage & Irrigation:<\/strong> Resistant to internal and external corrosion when cement-mortar lined, they serve reliably in sewer networks and agricultural irrigation systems.<\/p>\n<\/li>\n\nIndustrial & Power Plants:<\/strong> Their high tensile strength suits high-stress environments\u2014chemical plants, power-station cooling circuits, and mine dewatering .<\/p>\n<\/li>\n<\/ul>\nService Life & Durability<\/h2>\n
Modern ductile iron pipe boasts an expected life of over 100 years under normal conditions, thanks to GGG50 grade iron and advanced linings. Even in corrosive soils, polyethylene encasement or high-aluminum mortars protect the pipe, preventing degradation and extending service life .<\/p>\n
Laying & Connection<\/h2>\n\n- \n
Mechanical K-Type Joints:<\/strong> Integrated sockets with resilient gaskets allow quick, leak-free assembly and \u00b15\u00b0 angular deflections to accommodate ground movement.<\/p>\n<\/li>\n- \n
Flanged & Restrained Options:<\/strong> Flanged ends per EN 545 and restrained-joint alternatives ensure rigid anchoring in thrust-resistant installations.<\/p>\n<\/li>\n<\/ul>\nCompliance with International Standards<\/h2>\n
Manufactured under ISO 2531, EN 545, EN 598 and certified to ISO 9001, these pipes meet global quality benchmarks for dimensions, pressure ratings, and testing procedures. External zinc-bitumen coatings and WRAS-approved linings ensure potable-water compliance in Europe and beyond.<\/p>\n
Price Comparison with Other Series<\/h2>\n\n
<\/p>\n
\n
\n\n\n| Thickness Class<\/th>\n | Typical Price (USD\/ton)<\/th>\n | Notes<\/th>\n<\/tr>\n<\/thead>\n |
\n\n| K7<\/td>\n | 520 \u2013 550<\/td>\n | Lower wall thickness, PN10 service lines<\/td>\n<\/tr>\n |
\n| K9<\/td>\n | 520 \u2013 550<\/td>\n | Standard for medium\u2010pressure mains<\/td>\n<\/tr>\n |
\nK12<\/strong><\/td>\n559 (1\u201324 t)<\/strong><br\/>536 (25\u201399 t)<\/td>\n| Higher wall thickness for \u226516 bar<\/td>\n<\/tr>\n | \n| C25<\/td>\n | 400 \u2013 500<\/td>\n | Cement-lined, PN16<\/td>\n<\/tr>\n | \n| C40<\/td>\n | 545 \u2013 645<\/td>\n | Thickest wall, PN40<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\nAdvantages of Class K12 DN400 Pipe<\/h2>\n\n- \n
High Pressure Capacity:<\/strong> Up to 16 bar operating pressure, suitable for large-diameter mains.<\/p>\n<\/li>\n- \n
Excellent Ductility:<\/strong> GGG50 iron provides 270 MPa proof stress and \u22657% elongation after fracture.<\/p>\n<\/li>\n- \n
Superior Corrosion Resistance:<\/strong> Cement-mortar or epoxy-ceramic linings plus zinc-bitumen coating.<\/p>\n<\/li>\n- \n
Low Lifecycle Cost:<\/strong> Although initial capital cost is higher, operating costs are minimal over a 100+ year lifespan.<\/p>\n<\/li>\n<\/ul>\nFrequently Asked Questions<\/h2>\n\n- \n
What soil conditions require additional protection?<\/strong>
Aggressive, acidic, or highly saline soils call for polyethylene encasement per ANSI\/AWWA C105\/A21.5.<\/p>\n<\/li>\n- \n
Can the pipe handle seismic activity?<\/strong>
Yes\u2014mechanical joints permit angular deflection and axial movement, absorbing ground shifts.<\/p>\n<\/li>\n- \n
Are fittings and valves available?<\/strong>
Full range of bends, tees, hydrants, and restrained joints to EN 545\/EN 598 are supplied.<\/p>\n<\/li>\n<\/ol>\nCustomer Case Studies<\/h2>\n\n- \n
Monte Vista Water District (CA, USA):<\/strong> \u201cWe get 100\u2013125 years of service versus other materials,\u201d confirming life-cycle value for residents.<\/p>\n<\/li>\n- \n
Central Arkansas Water:<\/strong> Over 150 years of service in cast-iron mains; recent ductile installations continue this legacy in high\u2010stress urban pipelines.<\/p>\n<\/li>\n<\/ul>\nductile iron pipe dimensions<\/h2>\n\n\n\n| <\/td>\n | <\/td>\n | <\/td>\n | Pipe body weight \uff08kg\/m)<\/td>\n | <\/td>\n | <\/td>\n<\/tr>\n | \n| (Inside Diameter)<\/td>\n | (Outside Diameter)<\/td>\n | Socket Weight<\/td>\n | K8<\/td>\n | K9<\/td>\n | K10<\/td>\n | C class<\/td>\n | Total weight of Active Length=6M (kg)<\/td>\n | Total weight of Active Length=5.7M (kg)<\/td>\n<\/tr>\n | \n| DN(mm)<\/td>\n | OD(mm)<\/td>\n | \u2248 kg<\/td>\n | Class<\/td>\n | kg\/m<\/td>\n | K8<\/td>\n | K9<\/td>\n | K10<\/td>\n | C class<\/td>\n | K8<\/td>\n | K9<\/td>\n | K10<\/td>\n | C class<\/td>\n<\/tr>\n | \n| 80<\/td>\n | 98<\/td>\n | 3.40<\/td>\n | 12.20<\/td>\n | 12.20<\/td>\n | 12.20<\/td>\n | C40<\/td>\n | 9.10<\/td>\n | 77.00<\/td>\n | 77.00<\/td>\n | 77.00<\/td>\n | 58.00<\/td>\n | 73.00<\/td>\n | 73.00<\/td>\n | 73.00<\/td>\n | 55.00<\/td>\n<\/tr>\n | \n| 100<\/td>\n | 118<\/td>\n | 4.30<\/td>\n | 14.90<\/td>\n | 15.10<\/td>\n | 15.10<\/td>\n | C40<\/td>\n | 11.12<\/td>\n | 93.70<\/td>\n | 95.00<\/td>\n | 95.00<\/td>\n | 71.00<\/td>\n | 90.00<\/td>\n | 91.00<\/td>\n | 90.00<\/td>\n | 68.00<\/td>\n<\/tr>\n | \n| 125<\/td>\n | 144<\/td>\n | 5.70<\/td>\n | <\/td>\n | 18.90<\/td>\n | <\/td>\n | C40<\/td>\n | <\/td>\n | <\/td>\n | 119.00<\/td>\n | <\/td>\n | <\/td>\n | <\/td>\n | <\/td>\n | <\/td>\n | <\/td>\n<\/tr>\n | \n| 150<\/td>\n | 170<\/td>\n | 7.10<\/td>\n | 21.80<\/td>\n | 22.80<\/td>\n | 22.80<\/td>\n | C40<\/td>\n | 16.48<\/td>\n | 138.00<\/td>\n | 144.00<\/td>\n | 144.00<\/td>\n | 106.00<\/td>\n | 132.00<\/td>\n | 138.00<\/td>\n | 137.00<\/td>\n | 101.00<\/td>\n<\/tr>\n | \n| 200<\/td>\n | 222<\/td>\n | 10.30<\/td>\n | 28.70<\/td>\n | 30.60<\/td>\n | 30.60<\/td>\n | C40<\/td>\n | 22.62<\/td>\n | 183.00<\/td>\n | 194.00<\/td>\n | 194.00<\/td>\n | 146.00<\/td>\n | 174.00<\/td>\n | 185.00<\/td>\n | 185.00<\/td>\n | 139.00<\/td>\n<\/tr>\n | \n| 250<\/td>\n | 274<\/td>\n | 14.20<\/td>\n | 35.60<\/td>\n | 40.20<\/td>\n | 44.30<\/td>\n | C40<\/td>\n | 32.63<\/td>\n | 228.00<\/td>\n | 255.00<\/td>\n | 280.00<\/td>\n | 210.00<\/td>\n | 218.00<\/td>\n | 244.00<\/td>\n | 267.00<\/td>\n | 200.00<\/td>\n<\/tr>\n | \n| 300<\/td>\n | 326<\/td>\n | 18.90<\/td>\n | 45.30<\/td>\n | 50.80<\/td>\n | 56.30<\/td>\n | C30<\/td>\n | 43.90<\/td>\n | 290.00<\/td>\n | 323.00<\/td>\n | 357.00<\/td>\n | 282.00<\/td>\n | 278.00<\/td>\n | 309.00<\/td>\n | 340.00<\/td>\n | 269.00<\/td>\n<\/tr>\n | \n| 350<\/td>\n | 378<\/td>\n | 23.70<\/td>\n | 55.90<\/td>\n | 63.20<\/td>\n | 69.60<\/td>\n | C30<\/td>\n | 51.88<\/td>\n | 359.00<\/td>\n | 403.00<\/td>\n | 441.00<\/td>\n | 335.00<\/td>\n | 343.00<\/td>\n | 384.00<\/td>\n | 420.00<\/td>\n | 319.00<\/td>\n<\/tr>\n | \n| 400<\/td>\n | 429<\/td>\n | 29.50<\/td>\n | 67.30<\/td>\n | 75.50<\/td>\n | 83.70<\/td>\n | C30<\/td>\n | 60.78<\/td>\n | 433.00<\/td>\n | 482.00<\/td>\n | 532.00<\/td>\n | 394.00<\/td>\n | 414.00<\/td>\n | 460.00<\/td>\n | 506.00<\/td>\n | 376.00<\/td>\n<\/tr>\n | \n| 450<\/td>\n | 480<\/td>\n | 38.30<\/td>\n | 80.00<\/td>\n | 89.30<\/td>\n | 99.00<\/td>\n | C30<\/td>\n | 73.30<\/td>\n | 515.00<\/td>\n | 575.00<\/td>\n | 632.00<\/td>\n | 472.00<\/td>\n | 492.00<\/td>\n | 550.00<\/td>\n | 597.00<\/td>\n | 450.00<\/td>\n<\/tr>\n | \n| 500<\/td>\n | 532<\/td>\n | 42.80<\/td>\n | 92.80<\/td>\n | 104.30<\/td>\n | 115.60<\/td>\n | C30<\/td>\n | 87.20<\/td>\n | 600.00<\/td>\n | 669.00<\/td>\n | 736.00<\/td>\n | 566.00<\/td>\n | 572.00<\/td>\n | 638.00<\/td>\n | 702.00<\/td>\n | 540.00<\/td>\n<\/tr>\n | \n| 600<\/td>\n | 635<\/td>\n | 59.30<\/td>\n | 122.00<\/td>\n | 137.30<\/td>\n | 152.00<\/td>\n | C30<\/td>\n | 120.62<\/td>\n | 791.00<\/td>\n | 882.00<\/td>\n | 971.00<\/td>\n | 783.00<\/td>\n | 755.00<\/td>\n | 842.00<\/td>\n | 926.00<\/td>\n | 747.00<\/td>\n<\/tr>\n | \n| 700<\/td>\n | 738<\/td>\n | 79.10<\/td>\n | 155.00<\/td>\n | 173.90<\/td>\n | 193.00<\/td>\n | C25<\/td>\n | 142.15<\/td>\n | 1009.00<\/td>\n | 1123.00<\/td>\n | 1237.00<\/td>\n | 932.00<\/td>\n | 963.00<\/td>\n | 1071.00<\/td>\n | 1179.00<\/td>\n | 889.00<\/td>\n<\/tr>\n | \n| 800<\/td>\n | 842<\/td>\n | 102.60<\/td>\n | 192.00<\/td>\n | 215.20<\/td>\n | 239.00<\/td>\n | C25<\/td>\n | 177.07<\/td>\n | 1255.00<\/td>\n | 1394.00<\/td>\n | 1537.00<\/td>\n | 1165.00<\/td>\n | 1197.00<\/td>\n | 1330.00<\/td>\n | 1465.00<\/td>\n | 1112.00<\/td>\n<\/tr>\n | \n| 900<\/td>\n | 945<\/td>\n | 129.60<\/td>\n | 232.00<\/td>\n | 260.20<\/td>\n | 289.00<\/td>\n | C25<\/td>\n | 197.68<\/td>\n | 1521.00<\/td>\n | 1691.00<\/td>\n | 1863.00<\/td>\n | 1446.00<\/td>\n | 1452.00<\/td>\n | 1613.00<\/td>\n | 1777.00<\/td>\n | 1257.00<\/td>\n<\/tr>\n | \n| 1000<\/td>\n | 1048<\/td>\n | 161.30<\/td>\n | 275.00<\/td>\n | 309.30<\/td>\n | 343.20<\/td>\n | C25<\/td>\n | 266.28<\/td>\n | 1811.00<\/td>\n | 2017.00<\/td>\n | 2221.00<\/td>\n | 1759.00<\/td>\n | 1729.00<\/td>\n | 1925.00<\/td>\n | 2118.00<\/td>\n | 1679.00<\/td>\n<\/tr>\n | \n| 1100<\/td>\n | 1152<\/td>\n | 194.70<\/td>\n | <\/td>\n | 362.80<\/td>\n | <\/td>\n | <\/td>\n | <\/td>\n | <\/td>\n | 2372.00<\/td>\n | <\/td>\n | <\/td>\n | <\/td>\n | <\/td>\n | <\/td>\n | <\/td>\n<\/tr>\n | \n| 1200<\/td>\n | 1255<\/td>\n | 237.70<\/td>\n | 374.00<\/td>\n | 420.10<\/td>\n | 466.10<\/td>\n | C25<\/td>\n | 373.88<\/td>\n | 2482.00<\/td>\n | 2758.00<\/td>\n | 3034.00<\/td>\n | 2481.00<\/td>\n | 2370.00<\/td>\n | 2632.00<\/td>\n | 2894.00<\/td>\n | 2369.00<\/td>\n<\/tr>\n | \n| 1400<\/td>\n | 1462<\/td>\n | 279.30<\/td>\n | <\/td>\n | 547.20<\/td>\n | <\/td>\n | <\/td>\n | <\/td>\n | <\/td>\n | 3563.00<\/td>\n | <\/td>\n | <\/td>\n | <\/td>\n | <\/td>\n | <\/td>\n | <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nductile iron pipe\u00a0Mechanical property<\/h2>\n\n\n\n| Mechanical Property<\/td>\n<\/tr>\n | \n| Nominal Diameter<\/td>\n | Hydraulic test<\/td>\n | Tensile strength<\/td>\n | Elogation<\/td>\n | Yield strength<\/td>\n | Bending strength<\/td>\n | Brinell hardness<\/td>\n | Thickness of cement lining<\/td>\n<\/tr>\n | \n| DN(MM)<\/td>\n | Mpa<\/td>\n | Mpa<\/td>\n | %<\/td>\n | Mpa<\/td>\n | Mpa<\/td>\n | HB<\/td>\n | mm<\/td>\n<\/tr>\n | \n| DN80-DN300<\/td>\n | 5<\/td>\n | \u2265420<\/td>\n | \u226510<\/td>\n | \u2265300<\/td>\n | \u2265590<\/td>\n | \u2264230<\/td>\n | 3<\/td>\n<\/tr>\n | \n| DN350-DN600<\/td>\n | 4<\/td>\n | \u2265420<\/td>\n | \u226510<\/td>\n | \u2265300<\/td>\n | \u2265590<\/td>\n | \u2264230<\/td>\n | 5<\/td>\n<\/tr>\n | \n| DN700-DN1000<\/td>\n | 3.2<\/td>\n | \u2265420<\/td>\n | \u226510<\/td>\n | \u2265300<\/td>\n | \u2265590<\/td>\n | \u2264230<\/td>\n | 6<\/td>\n<\/tr>\n | \n| DN1100-DN1600<\/td>\n | 2.5<\/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":1987,"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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