{"id":1831,"date":"2025-04-21T15:26:31","date_gmt":"2025-04-21T07:26:31","guid":{"rendered":"https:\/\/www.ductileironsuppliers.com\/?post_type=product&#038;p=1831"},"modified":"2025-04-21T15:26:31","modified_gmt":"2025-04-21T07:26:31","slug":"class-k7-dn300-ductile-iron-pipe-suppliers","status":"publish","type":"product","link":"https:\/\/www.ductileironsuppliers.com\/ar\/product\/class-k7-dn300-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 K7 DN300"},"content":{"rendered":"<p class=\"\" data-start=\"32\" data-end=\"400\" data-immersive-translate-walked=\"fd8fa48a-3670-4fff-968c-8b598f830906\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"32\" data-end=\"68\" data-immersive-translate-walked=\"fd8fa48a-3670-4fff-968c-8b598f830906\">Class K7 DN300 ductile iron pipe<\/strong> has a nominal diameter of 300 mm (12&#8243;) and is designed to operate at a working pressure of 7 bar (approximately 100 psi). It is made from ductile iron of grade 500-7 (with a minimum tensile strength of 500 MPa and minimum elongation of 7%) or grade 450-10 (with a minimum tensile strength of 450 MPa and minimum elongation of 10%).<\/p>\n<p class=\"\" data-start=\"402\" data-end=\"700\" data-immersive-translate-walked=\"fd8fa48a-3670-4fff-968c-8b598f830906\" data-immersive-translate-paragraph=\"1\">The pipe features a smooth cement-mortar lining on the inside and a protective external coating of zinc (\u2265130 g\/m\u00b2) and bitumen (70 \u03bcm). An optional loose polyethylene sleeve can also be added. These features, along with modern installation practices, contribute to a design life of over 100 years.The pipe complies with international standards such as ISO 2531, EN 545\/EN 598, ISO 4179, and AWWA C150\/C151, making it widely accepted around the world.<\/p>\n<p class=\"\" data-start=\"1227\" data-end=\"1326\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">Ductile iron pipe\u2019s strength, resilience, and corrosion protection make Class\u00a0K7 DN300 ideal for:<\/p>\n<ul data-start=\"1327\" data-end=\"2334\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<li class=\"\" data-start=\"1327\" data-end=\"1558\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"1329\" data-end=\"1558\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"1329\" data-end=\"1359\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">Potable water distribution<\/strong>: Centrifugally cast DI pipe is the preferred choice for drinking water mains, offering low leak rates and smooth flow owing to its cement\u2011mortar lining.<\/p>\n<\/li>\n<li class=\"\" data-start=\"1559\" data-end=\"1750\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"1561\" data-end=\"1750\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"1561\" data-end=\"1600\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">Sewerage and pressure sewer systems<\/strong>: Conforms to BS EN 598 for wastewater, handling internal surges at pump stations without joint failure.<\/p>\n<\/li>\n<li class=\"\" data-start=\"1751\" data-end=\"1885\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"1753\" data-end=\"1885\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"1753\" data-end=\"1778\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">Fire protection mains<\/strong>: Meets NFPA safety factors with burst pressures &gt;\u00a03\u00d7 working pressure, ensuring reliable hydrant supply.<\/p>\n<\/li>\n<li class=\"\" data-start=\"1886\" data-end=\"2100\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"1888\" data-end=\"2100\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"1888\" data-end=\"1916\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">Industrial process lines<\/strong>: Chemical plants and refineries use custom epoxy or bitumen coatings on Class K7 pipes to withstand aggressive media and thermal cycling.<\/p>\n<\/li>\n<li class=\"\" data-start=\"2101\" data-end=\"2334\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"2103\" data-end=\"2334\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"2103\" data-end=\"2142\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">Trenchless and subsea installations<\/strong>: Push\u2011on and ball\u2011and\u2011socket restrained joints eliminate thrust blocks, reducing excavation in horizontal directional drilling and river crossings.<\/p>\n<\/li>\n<\/ul>\n<h2 class=\"\" data-start=\"2336\" data-end=\"2353\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">Service Life<\/h2>\n<p class=\"\" data-start=\"2354\" data-end=\"2454\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">Studies and industry data converge on a century\u2011plus lifespan for properly protected DI pipelines:<\/p>\n<ul data-start=\"2455\" data-end=\"2867\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<li class=\"\" data-start=\"2455\" data-end=\"2592\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"2457\" data-end=\"2592\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"2457\" data-end=\"2472\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\u2265\u00a0100\u00a0years<\/strong> with cement\u2011mortar lining and loose polyethylene sleeve encasement (LPS).<\/p>\n<\/li>\n<li class=\"\" data-start=\"2593\" data-end=\"2716\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"2595\" data-end=\"2716\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"2595\" data-end=\"2610\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">50\u201360\u00a0years<\/strong> for zinc\/bitumen coated pipes without LPS in typical soils.<\/p>\n<\/li>\n<li class=\"\" data-start=\"2717\" data-end=\"2867\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"2719\" data-end=\"2867\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"2719\" data-end=\"2747\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">Compared to alternatives<\/strong>: PVC mains generally last \u2248 50 years, making DI a longer\u2011term investment.<\/p>\n<\/li>\n<\/ul>\n<h2 class=\"\" data-start=\"2869\" data-end=\"2902\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">Installation and Connections<\/h2>\n<p class=\"\" data-start=\"2903\" data-end=\"2953\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">Class\u00a0K7 DN300 supports versatile joint systems:<\/p>\n<ul data-start=\"2954\" data-end=\"3751\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<li class=\"\" data-start=\"2954\" data-end=\"3174\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"2956\" data-end=\"3174\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"2956\" data-end=\"2982\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">Push\u2011on (Tyton\/T\u2011type)<\/strong>: Elastomeric gaskets form water\u2011tight seals and permit up to 4\u20135\u00b0 angular deflection per joint, accommodating alignment curves without leakage\u200b.<\/p>\n<\/li>\n<li class=\"\" data-start=\"3175\" data-end=\"3374\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"3177\" data-end=\"3374\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"3177\" data-end=\"3196\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">Mechanical (MJ)<\/strong>: Bolted restraint devices resist thrust at bends and tees, eliminating separate concrete thrust blocks and reducing trench depth.<\/p>\n<\/li>\n<li class=\"\" data-start=\"3375\" data-end=\"3564\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"3377\" data-end=\"3564\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"3377\" data-end=\"3393\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">Flanged ends<\/strong>: Standard ISO\/AWWA flanges allow direct connection to valves, hydrants, and fittings for easy integration and maintenance.<\/p>\n<\/li>\n<li class=\"\" data-start=\"3565\" data-end=\"3751\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"3567\" data-end=\"3751\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"3567\" data-end=\"3597\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">Ball\u2011and\u2011socket restrained<\/strong>: Ideal for submerged or unstable ground, these joints resist axial separation under high hydrostatic loads.<\/p>\n<\/li>\n<\/ul>\n<h2 class=\"\" data-start=\"3753\" data-end=\"3781\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">International Standards<\/h2>\n<p class=\"\" data-start=\"3782\" data-end=\"3846\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">Class\u00a0K7 DN300 pipes meet the following global specifications:<\/p>\n<ul data-start=\"3847\" data-end=\"4422\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<li class=\"\" data-start=\"3847\" data-end=\"3966\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"3849\" data-end=\"3966\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"3849\" data-end=\"3866\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">ISO\u00a02531:2009<\/strong> \u2013 Ductile iron pipes for water supply applications.<\/p>\n<\/li>\n<li class=\"\" data-start=\"3967\" data-end=\"4075\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"3969\" data-end=\"4075\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"3969\" data-end=\"3984\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">EN\u00a0545:2010<\/strong> \u2013 DI pipes and fittings for potable water.<\/p>\n<\/li>\n<li class=\"\" data-start=\"4076\" data-end=\"4187\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"4078\" data-end=\"4187\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"4078\" data-end=\"4093\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">EN\u00a0598:2007<\/strong> \u2013 DI pipes and fittings for sewerage systems.<\/p>\n<\/li>\n<li class=\"\" data-start=\"4188\" data-end=\"4287\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"4190\" data-end=\"4287\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"4190\" data-end=\"4202\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">ISO\u00a04179<\/strong> \u2013 Cement\u2011mortar lining requirements.<\/p>\n<\/li>\n<li class=\"\" data-start=\"4288\" data-end=\"4422\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"4290\" data-end=\"4422\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"4290\" data-end=\"4308\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">AWWA\u00a0C150\/C151<\/strong> \u2013 Design and centrifugally cast DI pipe standards in North America.<\/p>\n<\/li>\n<\/ul>\n<h2 class=\"\" data-start=\"4424\" data-end=\"4463\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">Price Comparison with Other Series<\/h2>\n<p class=\"\" data-start=\"4464\" data-end=\"4557\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">Indicative pricing (USD per metric ton, 6\u00a0m lengths; subject to volume, coating, and region):<\/p>\n<div class=\"group pointer-events-none relative flex justify-center *:pointer-events-auto\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p>&nbsp;<\/p>\n<div class=\"tableContainer horzScrollShadows relative\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<table class=\"min-w-full\" data-start=\"4559\" data-end=\"5350\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<thead data-start=\"4559\" data-end=\"4679\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<tr data-start=\"4559\" data-end=\"4679\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<th data-start=\"4559\" data-end=\"4569\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">Class<\/th>\n<th data-start=\"4569\" data-end=\"4588\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">Working Pressure<\/th>\n<th data-start=\"4588\" data-end=\"4620\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">Price Range (USD\/MT)<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"4801\" data-end=\"5350\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<tr data-start=\"4801\" data-end=\"4927\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<td class=\"max-w-[calc(var(--thread-content-max-width)*2\/3)]\" data-start=\"4801\" data-end=\"4811\"><strong data-start=\"4803\" data-end=\"4809\">K7<\/strong><\/td>\n<td class=\"max-w-[calc(var(--thread-content-max-width)*2\/3)]\" data-start=\"4811\" data-end=\"4830\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">7\u00a0bar<\/td>\n<td class=\"max-w-[calc(var(--thread-content-max-width)*2\/3)]\" data-start=\"4830\" data-end=\"4862\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">400\u2013900<\/td>\n<\/tr>\n<tr data-start=\"4928\" data-end=\"5066\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<td class=\"max-w-[calc(var(--thread-content-max-width)*2\/3)]\" data-start=\"4928\" data-end=\"4938\"><strong data-start=\"4930\" data-end=\"4937\">C30<\/strong><\/td>\n<td class=\"max-w-[calc(var(--thread-content-max-width)*2\/3)]\" data-start=\"4938\" data-end=\"4957\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">30\u00a0bar<\/td>\n<td class=\"max-w-[calc(var(--thread-content-max-width)*2\/3)]\" data-start=\"4957\" data-end=\"4989\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">460\u2013560<\/td>\n<\/tr>\n<tr data-start=\"5067\" data-end=\"5205\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<td class=\"max-w-[calc(var(--thread-content-max-width)*2\/3)]\" data-start=\"5067\" data-end=\"5077\"><strong data-start=\"5069\" data-end=\"5075\">K8<\/strong><\/td>\n<td class=\"max-w-[calc(var(--thread-content-max-width)*2\/3)]\" data-start=\"5077\" data-end=\"5096\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">8\u00a0bar<\/td>\n<td class=\"max-w-[calc(var(--thread-content-max-width)*2\/3)]\" data-start=\"5096\" data-end=\"5128\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">400\u2013720<\/td>\n<\/tr>\n<tr data-start=\"5206\" data-end=\"5350\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<td class=\"max-w-[calc(var(--thread-content-max-width)*2\/3)]\" data-start=\"5206\" data-end=\"5216\"><strong data-start=\"5208\" data-end=\"5214\">K9<\/strong><\/td>\n<td class=\"max-w-[calc(var(--thread-content-max-width)*2\/3)]\" data-start=\"5216\" data-end=\"5235\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">9\u00a0bar<\/td>\n<td class=\"max-w-[calc(var(--thread-content-max-width)*2\/3)]\" data-start=\"5235\" data-end=\"5267\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">478\u2013531<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<h2 class=\"\" data-start=\"5352\" data-end=\"5371\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">Key Advantages<\/h2>\n<ul data-start=\"5372\" data-end=\"6377\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<li class=\"\" data-start=\"5372\" data-end=\"5596\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"5374\" data-end=\"5596\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"5374\" data-end=\"5399\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">Mechanical resilience<\/strong>: Manufactured from ductile iron grade 500\u20117 or 450\u201110 (tensile \u2265 450\u2013500 MPa; elongation \u2265 7\u201310%), providing superior impact and fatigue resistance\u200b.<\/p>\n<\/li>\n<li class=\"\" data-start=\"5597\" data-end=\"5836\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"5599\" data-end=\"5836\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"5599\" data-end=\"5623\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">Corrosion protection<\/strong>: Cement\u2011mortar interior lining (Hazen\u2011Williams factor 130\u2013151) plus zinc\/bitumen exterior and optional LPS deliver decades of corrosion control in aggressive soils.<\/p>\n<\/li>\n<li class=\"\" data-start=\"5837\" data-end=\"6019\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"5839\" data-end=\"6019\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"5839\" data-end=\"5863\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">Hydraulic efficiency<\/strong>: Smooth lining minimizes head loss, reducing pumping energy and operational costs over a long service life.<\/p>\n<\/li>\n<li class=\"\" data-start=\"6020\" data-end=\"6208\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"6022\" data-end=\"6208\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"6022\" data-end=\"6050\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">Installation flexibility<\/strong>: Push\u2011on and restrained joints accommodate ground movement and seismic loads without extensive thrust blocks\u200b.<\/p>\n<\/li>\n<li class=\"\" data-start=\"6209\" data-end=\"6377\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"6211\" data-end=\"6377\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"6211\" data-end=\"6229\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">Sustainability<\/strong>: Made from \u2265\u00a090% recycled iron; fully recyclable at end\u2011of\u2011life; environmentally preferable material\u200b.<\/p>\n<\/li>\n<\/ul>\n<h2 class=\"\" data-start=\"6379\" data-end=\"6410\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">Frequently Asked Questions<\/h2>\n<p class=\"\" data-start=\"6412\" data-end=\"6577\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"6412\" data-end=\"6450\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">Q1: What does \u201cClass\u00a0K7\u201d indicate?<\/strong><br data-start=\"6450\" data-end=\"6453\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" \/>A1: A nominal pressure rating of 7 bar (\u2248100 psi) per ISO 2531 designations.<\/p>\n<p class=\"\" data-start=\"6579\" data-end=\"6792\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"6579\" data-end=\"6610\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">Q2: Why choose DN300 (12\u2033)?<\/strong><br data-start=\"6610\" data-end=\"6613\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" \/>A2: DN300 balances high flow capacity for trunk mains with manageable handling, fitting availability, and pump station integration\u200b.<\/p>\n<p class=\"\" data-start=\"6794\" data-end=\"7071\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"6794\" data-end=\"6829\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">Q3: How is corrosion mitigated?<\/strong><br data-start=\"6829\" data-end=\"6832\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" \/>A3: Through cement\u2011mortar lining per ISO 4179 and external zinc (130 g\/m\u00b2) + bitumen (70 \u03bcm) coatings; optional loose polyethylene sleeve (ANSI\/AWWA C105) further protects in corrosive soils.<\/p>\n<p class=\"\" data-start=\"7073\" data-end=\"7330\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"7073\" data-end=\"7112\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">Q4: What joint types are available?<\/strong><br data-start=\"7112\" data-end=\"7115\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" \/>A4: Push\u2011on (Tyton\/T\u2011type), mechanical restrained (MJ), flanged, and ball\u2011and\u2011socket restrained joints, selected by project needs for speed, cost, and thrust resistance\u200b.<\/p>\n<h2 class=\"\" data-start=\"7332\" data-end=\"7349\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\">Case Studies<\/h2>\n<ul data-start=\"7351\" data-end=\"7899\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<li class=\"\" data-start=\"7351\" data-end=\"7601\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"7353\" data-end=\"7601\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"7353\" data-end=\"7388\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">Wilkes\u2011Barre, Pennsylvania (PA)<\/strong>: Pennsylvania American Water replaced 5.5 km of aging mains with 8\u2033 and 12\u2033 Class K7 ductile iron, reducing leaks by 90% and achieving a 50\u2011year lifespan extension.<\/p>\n<\/li>\n<li class=\"\" data-start=\"7602\" data-end=\"7899\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">\n<p class=\"\" data-start=\"7604\" data-end=\"7899\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\" data-immersive-translate-paragraph=\"1\"><strong data-start=\"7604\" data-end=\"7639\" data-immersive-translate-walked=\"bc778477-96a6-4b00-aa14-32d68a1b25a4\">St. Louis County, Missouri (MO)<\/strong>: Missouri American Water installed a 1.6 km section of 16\u2033 (\u2248DN400) ductile iron petroline to replace 1950s\u2011era steel, cutting maintenance costs by 40% and ensuring reliable service under variable soil conditions.<\/p>\n<\/li>\n<\/ul>\n<h2>ductile iron pipe dimensions<\/h2>\n<table>\n<tbody>\n<tr>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td colspan=\"5\" align=\"center\" valign=\"middle\">Pipe body weight \uff08kg\/m)<\/td>\n<td colspan=\"4\" align=\"center\" valign=\"middle\"><\/td>\n<td colspan=\"4\" align=\"center\" valign=\"middle\"><\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">(Inside Diameter)<\/td>\n<td align=\"center\" valign=\"middle\">(Outside Diameter)<\/td>\n<td align=\"center\" valign=\"middle\">Socket Weight<\/td>\n<td rowspan=\"2\" align=\"center\" valign=\"middle\">K8<\/td>\n<td rowspan=\"2\" align=\"center\" valign=\"middle\">K9<\/td>\n<td rowspan=\"2\" align=\"center\" valign=\"middle\">K10<\/td>\n<td colspan=\"2\" align=\"center\" valign=\"middle\">C class<\/td>\n<td colspan=\"4\" align=\"center\" valign=\"middle\">Total weight of Active Length=6M (kg)<\/td>\n<td colspan=\"4\" align=\"center\" valign=\"middle\">Total weight of Active Length=5.7M (kg)<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">DN(mm)<\/td>\n<td align=\"center\" valign=\"middle\">OD(mm)<\/td>\n<td align=\"center\" valign=\"middle\">\u2248 kg<\/td>\n<td align=\"center\" valign=\"middle\">Class<\/td>\n<td align=\"center\" valign=\"middle\">kg\/m<\/td>\n<td align=\"center\" valign=\"middle\">K8<\/td>\n<td align=\"center\" valign=\"middle\">K9<\/td>\n<td align=\"center\" valign=\"middle\">K10<\/td>\n<td align=\"center\" valign=\"middle\">C class<\/td>\n<td align=\"center\" valign=\"middle\">K8<\/td>\n<td align=\"center\" valign=\"middle\">K9<\/td>\n<td align=\"center\" valign=\"middle\">K10<\/td>\n<td align=\"center\" valign=\"middle\">C class<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">80<\/td>\n<td align=\"center\" valign=\"middle\">98<\/td>\n<td align=\"center\" valign=\"middle\">3.40<\/td>\n<td align=\"center\" valign=\"middle\">12.20<\/td>\n<td align=\"center\" valign=\"middle\">12.20<\/td>\n<td align=\"center\" valign=\"middle\">12.20<\/td>\n<td align=\"center\" valign=\"middle\">C40<\/td>\n<td align=\"center\" valign=\"middle\">9.10<\/td>\n<td align=\"center\" valign=\"middle\">77.00<\/td>\n<td align=\"center\" valign=\"middle\">77.00<\/td>\n<td align=\"center\" valign=\"middle\">77.00<\/td>\n<td align=\"center\" valign=\"middle\">58.00<\/td>\n<td align=\"center\" valign=\"middle\">73.00<\/td>\n<td align=\"center\" valign=\"middle\">73.00<\/td>\n<td align=\"center\" valign=\"middle\">73.00<\/td>\n<td align=\"center\" valign=\"middle\">55.00<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">100<\/td>\n<td align=\"center\" valign=\"middle\">118<\/td>\n<td align=\"center\" valign=\"middle\">4.30<\/td>\n<td align=\"center\" valign=\"middle\">14.90<\/td>\n<td align=\"center\" valign=\"middle\">15.10<\/td>\n<td align=\"center\" valign=\"middle\">15.10<\/td>\n<td align=\"center\" valign=\"middle\">C40<\/td>\n<td align=\"center\" valign=\"middle\">11.12<\/td>\n<td align=\"center\" valign=\"middle\">93.70<\/td>\n<td align=\"center\" valign=\"middle\">95.00<\/td>\n<td align=\"center\" valign=\"middle\">95.00<\/td>\n<td align=\"center\" valign=\"middle\">71.00<\/td>\n<td align=\"center\" valign=\"middle\">90.00<\/td>\n<td align=\"center\" valign=\"middle\">91.00<\/td>\n<td align=\"center\" valign=\"middle\">90.00<\/td>\n<td align=\"center\" valign=\"middle\">68.00<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">125<\/td>\n<td align=\"center\" valign=\"middle\">144<\/td>\n<td align=\"center\" valign=\"middle\">5.70<\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\">18.90<\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\">C40<\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\">119.00<\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">150<\/td>\n<td align=\"center\" valign=\"middle\">170<\/td>\n<td align=\"center\" valign=\"middle\">7.10<\/td>\n<td align=\"center\" valign=\"middle\">21.80<\/td>\n<td align=\"center\" valign=\"middle\">22.80<\/td>\n<td align=\"center\" valign=\"middle\">22.80<\/td>\n<td align=\"center\" valign=\"middle\">C40<\/td>\n<td align=\"center\" valign=\"middle\">16.48<\/td>\n<td align=\"center\" valign=\"middle\">138.00<\/td>\n<td align=\"center\" valign=\"middle\">144.00<\/td>\n<td align=\"center\" valign=\"middle\">144.00<\/td>\n<td align=\"center\" valign=\"middle\">106.00<\/td>\n<td align=\"center\" valign=\"middle\">132.00<\/td>\n<td align=\"center\" valign=\"middle\">138.00<\/td>\n<td align=\"center\" valign=\"middle\">137.00<\/td>\n<td align=\"center\" valign=\"middle\">101.00<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">200<\/td>\n<td align=\"center\" valign=\"middle\">222<\/td>\n<td align=\"center\" valign=\"middle\">10.30<\/td>\n<td align=\"center\" valign=\"middle\">28.70<\/td>\n<td align=\"center\" valign=\"middle\">30.60<\/td>\n<td align=\"center\" valign=\"middle\">30.60<\/td>\n<td align=\"center\" valign=\"middle\">C40<\/td>\n<td align=\"center\" valign=\"middle\">22.62<\/td>\n<td align=\"center\" valign=\"middle\">183.00<\/td>\n<td align=\"center\" valign=\"middle\">194.00<\/td>\n<td align=\"center\" valign=\"middle\">194.00<\/td>\n<td align=\"center\" valign=\"middle\">146.00<\/td>\n<td align=\"center\" valign=\"middle\">174.00<\/td>\n<td align=\"center\" valign=\"middle\">185.00<\/td>\n<td align=\"center\" valign=\"middle\">185.00<\/td>\n<td align=\"center\" valign=\"middle\">139.00<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">250<\/td>\n<td align=\"center\" valign=\"middle\">274<\/td>\n<td align=\"center\" valign=\"middle\">14.20<\/td>\n<td align=\"center\" valign=\"middle\">35.60<\/td>\n<td align=\"center\" valign=\"middle\">40.20<\/td>\n<td align=\"center\" valign=\"middle\">44.30<\/td>\n<td align=\"center\" valign=\"middle\">C40<\/td>\n<td align=\"center\" valign=\"middle\">32.63<\/td>\n<td align=\"center\" valign=\"middle\">228.00<\/td>\n<td align=\"center\" valign=\"middle\">255.00<\/td>\n<td align=\"center\" valign=\"middle\">280.00<\/td>\n<td align=\"center\" valign=\"middle\">210.00<\/td>\n<td align=\"center\" valign=\"middle\">218.00<\/td>\n<td align=\"center\" valign=\"middle\">244.00<\/td>\n<td align=\"center\" valign=\"middle\">267.00<\/td>\n<td align=\"center\" valign=\"middle\">200.00<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">300<\/td>\n<td align=\"center\" valign=\"middle\">326<\/td>\n<td align=\"center\" valign=\"middle\">18.90<\/td>\n<td align=\"center\" valign=\"middle\">45.30<\/td>\n<td align=\"center\" valign=\"middle\">50.80<\/td>\n<td align=\"center\" valign=\"middle\">56.30<\/td>\n<td align=\"center\" valign=\"middle\">C30<\/td>\n<td align=\"center\" valign=\"middle\">43.90<\/td>\n<td align=\"center\" valign=\"middle\">290.00<\/td>\n<td align=\"center\" valign=\"middle\">323.00<\/td>\n<td align=\"center\" valign=\"middle\">357.00<\/td>\n<td align=\"center\" valign=\"middle\">282.00<\/td>\n<td align=\"center\" valign=\"middle\">278.00<\/td>\n<td align=\"center\" valign=\"middle\">309.00<\/td>\n<td align=\"center\" valign=\"middle\">340.00<\/td>\n<td align=\"center\" valign=\"middle\">269.00<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">350<\/td>\n<td align=\"center\" valign=\"middle\">378<\/td>\n<td align=\"center\" valign=\"middle\">23.70<\/td>\n<td align=\"center\" valign=\"middle\">55.90<\/td>\n<td align=\"center\" valign=\"middle\">63.20<\/td>\n<td align=\"center\" valign=\"middle\">69.60<\/td>\n<td align=\"center\" valign=\"middle\">C30<\/td>\n<td align=\"center\" valign=\"middle\">51.88<\/td>\n<td align=\"center\" valign=\"middle\">359.00<\/td>\n<td align=\"center\" valign=\"middle\">403.00<\/td>\n<td align=\"center\" valign=\"middle\">441.00<\/td>\n<td align=\"center\" valign=\"middle\">335.00<\/td>\n<td align=\"center\" valign=\"middle\">343.00<\/td>\n<td align=\"center\" valign=\"middle\">384.00<\/td>\n<td align=\"center\" valign=\"middle\">420.00<\/td>\n<td align=\"center\" valign=\"middle\">319.00<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">400<\/td>\n<td align=\"center\" valign=\"middle\">429<\/td>\n<td align=\"center\" valign=\"middle\">29.50<\/td>\n<td align=\"center\" valign=\"middle\">67.30<\/td>\n<td align=\"center\" valign=\"middle\">75.50<\/td>\n<td align=\"center\" valign=\"middle\">83.70<\/td>\n<td align=\"center\" valign=\"middle\">C30<\/td>\n<td align=\"center\" valign=\"middle\">60.78<\/td>\n<td align=\"center\" valign=\"middle\">433.00<\/td>\n<td align=\"center\" valign=\"middle\">482.00<\/td>\n<td align=\"center\" valign=\"middle\">532.00<\/td>\n<td align=\"center\" valign=\"middle\">394.00<\/td>\n<td align=\"center\" valign=\"middle\">414.00<\/td>\n<td align=\"center\" valign=\"middle\">460.00<\/td>\n<td align=\"center\" valign=\"middle\">506.00<\/td>\n<td align=\"center\" valign=\"middle\">376.00<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">450<\/td>\n<td align=\"center\" valign=\"middle\">480<\/td>\n<td align=\"center\" valign=\"middle\">38.30<\/td>\n<td align=\"center\" valign=\"middle\">80.00<\/td>\n<td align=\"center\" valign=\"middle\">89.30<\/td>\n<td align=\"center\" valign=\"middle\">99.00<\/td>\n<td align=\"center\" valign=\"middle\">C30<\/td>\n<td align=\"center\" valign=\"middle\">73.30<\/td>\n<td align=\"center\" valign=\"middle\">515.00<\/td>\n<td align=\"center\" valign=\"middle\">575.00<\/td>\n<td align=\"center\" valign=\"middle\">632.00<\/td>\n<td align=\"center\" valign=\"middle\">472.00<\/td>\n<td align=\"center\" valign=\"middle\">492.00<\/td>\n<td align=\"center\" valign=\"middle\">550.00<\/td>\n<td align=\"center\" valign=\"middle\">597.00<\/td>\n<td align=\"center\" valign=\"middle\">450.00<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">500<\/td>\n<td align=\"center\" valign=\"middle\">532<\/td>\n<td align=\"center\" valign=\"middle\">42.80<\/td>\n<td align=\"center\" valign=\"middle\">92.80<\/td>\n<td align=\"center\" valign=\"middle\">104.30<\/td>\n<td align=\"center\" valign=\"middle\">115.60<\/td>\n<td align=\"center\" valign=\"middle\">C30<\/td>\n<td align=\"center\" valign=\"middle\">87.20<\/td>\n<td align=\"center\" valign=\"middle\">600.00<\/td>\n<td align=\"center\" valign=\"middle\">669.00<\/td>\n<td align=\"center\" valign=\"middle\">736.00<\/td>\n<td align=\"center\" valign=\"middle\">566.00<\/td>\n<td align=\"center\" valign=\"middle\">572.00<\/td>\n<td align=\"center\" valign=\"middle\">638.00<\/td>\n<td align=\"center\" valign=\"middle\">702.00<\/td>\n<td align=\"center\" valign=\"middle\">540.00<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">600<\/td>\n<td align=\"center\" valign=\"middle\">635<\/td>\n<td align=\"center\" valign=\"middle\">59.30<\/td>\n<td align=\"center\" valign=\"middle\">122.00<\/td>\n<td align=\"center\" valign=\"middle\">137.30<\/td>\n<td align=\"center\" valign=\"middle\">152.00<\/td>\n<td align=\"center\" valign=\"middle\">C30<\/td>\n<td align=\"center\" valign=\"middle\">120.62<\/td>\n<td align=\"center\" valign=\"middle\">791.00<\/td>\n<td align=\"center\" valign=\"middle\">882.00<\/td>\n<td align=\"center\" valign=\"middle\">971.00<\/td>\n<td align=\"center\" valign=\"middle\">783.00<\/td>\n<td align=\"center\" valign=\"middle\">755.00<\/td>\n<td align=\"center\" valign=\"middle\">842.00<\/td>\n<td align=\"center\" valign=\"middle\">926.00<\/td>\n<td align=\"center\" valign=\"middle\">747.00<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">700<\/td>\n<td align=\"center\" valign=\"middle\">738<\/td>\n<td align=\"center\" valign=\"middle\">79.10<\/td>\n<td align=\"center\" valign=\"middle\">155.00<\/td>\n<td align=\"center\" valign=\"middle\">173.90<\/td>\n<td align=\"center\" valign=\"middle\">193.00<\/td>\n<td align=\"center\" valign=\"middle\">C25<\/td>\n<td align=\"center\" valign=\"middle\">142.15<\/td>\n<td align=\"center\" valign=\"middle\">1009.00<\/td>\n<td align=\"center\" valign=\"middle\">1123.00<\/td>\n<td align=\"center\" valign=\"middle\">1237.00<\/td>\n<td align=\"center\" valign=\"middle\">932.00<\/td>\n<td align=\"center\" valign=\"middle\">963.00<\/td>\n<td align=\"center\" valign=\"middle\">1071.00<\/td>\n<td align=\"center\" valign=\"middle\">1179.00<\/td>\n<td align=\"center\" valign=\"middle\">889.00<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">800<\/td>\n<td align=\"center\" valign=\"middle\">842<\/td>\n<td align=\"center\" valign=\"middle\">102.60<\/td>\n<td align=\"center\" valign=\"middle\">192.00<\/td>\n<td align=\"center\" valign=\"middle\">215.20<\/td>\n<td align=\"center\" valign=\"middle\">239.00<\/td>\n<td align=\"center\" valign=\"middle\">C25<\/td>\n<td align=\"center\" valign=\"middle\">177.07<\/td>\n<td align=\"center\" valign=\"middle\">1255.00<\/td>\n<td align=\"center\" valign=\"middle\">1394.00<\/td>\n<td align=\"center\" valign=\"middle\">1537.00<\/td>\n<td align=\"center\" valign=\"middle\">1165.00<\/td>\n<td align=\"center\" valign=\"middle\">1197.00<\/td>\n<td align=\"center\" valign=\"middle\">1330.00<\/td>\n<td align=\"center\" valign=\"middle\">1465.00<\/td>\n<td align=\"center\" valign=\"middle\">1112.00<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">900<\/td>\n<td align=\"center\" valign=\"middle\">945<\/td>\n<td align=\"center\" valign=\"middle\">129.60<\/td>\n<td align=\"center\" valign=\"middle\">232.00<\/td>\n<td align=\"center\" valign=\"middle\">260.20<\/td>\n<td align=\"center\" valign=\"middle\">289.00<\/td>\n<td align=\"center\" valign=\"middle\">C25<\/td>\n<td align=\"center\" valign=\"middle\">197.68<\/td>\n<td align=\"center\" valign=\"middle\">1521.00<\/td>\n<td align=\"center\" valign=\"middle\">1691.00<\/td>\n<td align=\"center\" valign=\"middle\">1863.00<\/td>\n<td align=\"center\" valign=\"middle\">1446.00<\/td>\n<td align=\"center\" valign=\"middle\">1452.00<\/td>\n<td align=\"center\" valign=\"middle\">1613.00<\/td>\n<td align=\"center\" valign=\"middle\">1777.00<\/td>\n<td align=\"center\" valign=\"middle\">1257.00<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">1000<\/td>\n<td align=\"center\" valign=\"middle\">1048<\/td>\n<td align=\"center\" valign=\"middle\">161.30<\/td>\n<td align=\"center\" valign=\"middle\">275.00<\/td>\n<td align=\"center\" valign=\"middle\">309.30<\/td>\n<td align=\"center\" valign=\"middle\">343.20<\/td>\n<td align=\"center\" valign=\"middle\">C25<\/td>\n<td align=\"center\" valign=\"middle\">266.28<\/td>\n<td align=\"center\" valign=\"middle\">1811.00<\/td>\n<td align=\"center\" valign=\"middle\">2017.00<\/td>\n<td align=\"center\" valign=\"middle\">2221.00<\/td>\n<td align=\"center\" valign=\"middle\">1759.00<\/td>\n<td align=\"center\" valign=\"middle\">1729.00<\/td>\n<td align=\"center\" valign=\"middle\">1925.00<\/td>\n<td align=\"center\" valign=\"middle\">2118.00<\/td>\n<td align=\"center\" valign=\"middle\">1679.00<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">1100<\/td>\n<td align=\"center\" valign=\"middle\">1152<\/td>\n<td align=\"center\" valign=\"middle\">194.70<\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\">362.80<\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\">2372.00<\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">1200<\/td>\n<td align=\"center\" valign=\"middle\">1255<\/td>\n<td align=\"center\" valign=\"middle\">237.70<\/td>\n<td align=\"center\" valign=\"middle\">374.00<\/td>\n<td align=\"center\" valign=\"middle\">420.10<\/td>\n<td align=\"center\" valign=\"middle\">466.10<\/td>\n<td align=\"center\" valign=\"middle\">C25<\/td>\n<td align=\"center\" valign=\"middle\">373.88<\/td>\n<td align=\"center\" valign=\"middle\">2482.00<\/td>\n<td align=\"center\" valign=\"middle\">2758.00<\/td>\n<td align=\"center\" valign=\"middle\">3034.00<\/td>\n<td align=\"center\" valign=\"middle\">2481.00<\/td>\n<td align=\"center\" valign=\"middle\">2370.00<\/td>\n<td align=\"center\" valign=\"middle\">2632.00<\/td>\n<td align=\"center\" valign=\"middle\">2894.00<\/td>\n<td align=\"center\" valign=\"middle\">2369.00<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">1400<\/td>\n<td align=\"center\" valign=\"middle\">1462<\/td>\n<td align=\"center\" valign=\"middle\">279.30<\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\">547.20<\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\">3563.00<\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<td align=\"center\" valign=\"middle\"><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>ductile iron pipe\u00a0Mechanical property<\/h2>\n<table>\n<tbody>\n<tr>\n<td colspan=\"8\" align=\"center\" valign=\"middle\">Mechanical Property<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">Nominal Diameter<\/td>\n<td align=\"center\" valign=\"middle\">Hydraulic test<\/td>\n<td align=\"center\" valign=\"middle\">Tensile strength<\/td>\n<td align=\"center\" valign=\"middle\">Elogation<\/td>\n<td align=\"center\" valign=\"middle\">Yield strength<\/td>\n<td align=\"center\" valign=\"middle\">Bending strength<\/td>\n<td align=\"center\" valign=\"middle\">Brinell hardness<\/td>\n<td align=\"center\" valign=\"middle\">Thickness of cement lining<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">DN(MM)<\/td>\n<td align=\"center\" valign=\"middle\">Mpa<\/td>\n<td align=\"center\" valign=\"middle\">Mpa<\/td>\n<td align=\"center\" valign=\"middle\">%<\/td>\n<td align=\"center\" valign=\"middle\">Mpa<\/td>\n<td align=\"center\" valign=\"middle\">Mpa<\/td>\n<td align=\"center\" valign=\"middle\">HB<\/td>\n<td align=\"center\" valign=\"middle\">mm<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">DN80-DN300<\/td>\n<td align=\"center\" valign=\"middle\">5<\/td>\n<td align=\"center\" valign=\"middle\">\u2265420<\/td>\n<td align=\"center\" valign=\"middle\">\u226510<\/td>\n<td align=\"center\" valign=\"middle\">\u2265300<\/td>\n<td align=\"center\" valign=\"middle\">\u2265590<\/td>\n<td align=\"center\" valign=\"middle\">\u2264230<\/td>\n<td align=\"center\" valign=\"middle\">3<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">DN350-DN600<\/td>\n<td align=\"center\" valign=\"middle\">4<\/td>\n<td align=\"center\" valign=\"middle\">\u2265420<\/td>\n<td align=\"center\" valign=\"middle\">\u226510<\/td>\n<td align=\"center\" valign=\"middle\">\u2265300<\/td>\n<td align=\"center\" valign=\"middle\">\u2265590<\/td>\n<td align=\"center\" valign=\"middle\">\u2264230<\/td>\n<td align=\"center\" valign=\"middle\">5<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">DN700-DN1000<\/td>\n<td align=\"center\" valign=\"middle\">3.2<\/td>\n<td align=\"center\" valign=\"middle\">\u2265420<\/td>\n<td align=\"center\" valign=\"middle\">\u226510<\/td>\n<td align=\"center\" valign=\"middle\">\u2265300<\/td>\n<td align=\"center\" valign=\"middle\">\u2265590<\/td>\n<td align=\"center\" valign=\"middle\">\u2264230<\/td>\n<td align=\"center\" valign=\"middle\">6<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" valign=\"middle\">DN1100-DN1600<\/td>\n<td align=\"center\" valign=\"middle\">2.5<\/td>\n<td align=\"center\" valign=\"middle\">\u2265420<\/td>\n<td align=\"center\" valign=\"middle\">\u22657<\/td>\n<td align=\"center\" valign=\"middle\">\u2265300<\/td>\n<td align=\"center\" valign=\"middle\">\u2265590<\/td>\n<td align=\"center\" valign=\"middle\">\u2264230<\/td>\n<td align=\"center\" valign=\"middle\">\u2026..<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":1832,"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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