{"id":2806,"date":"2025-05-08T15:17:09","date_gmt":"2025-05-08T07:17:09","guid":{"rendered":"https:\/\/www.ductileironsuppliers.com\/?p=2806"},"modified":"2025-05-30T14:15:19","modified_gmt":"2025-05-30T06:15:19","slug":"class-12-inch-ductile-iron-pipe-dimensions","status":"publish","type":"post","link":"https:\/\/www.ductileironsuppliers.com\/ar\/class-12-inch-ductile-iron-pipe-dimensions.html","title":{"rendered":"\u0623\u0628\u0639\u0627\u062f \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 12 \u0628\u0648\u0635\u0629"},"content":{"rendered":"

Understanding the \u200cdimensions of 12-inch ductile iron pipe<\/a><\/strong>\u200c is critical for designing water, sewer, and industrial systems that require durability and precision. This guide breaks down key specifications, including outer diameter (OD), wall thickness, and pressure class, to ensure compliance with \u200cAWWA C151 standards<\/strong>\u200c and seamless integration into your project.<\/p>\n

\"12-Inch<\/a>
12-Inch Ductile Iron Pipe Dimensions<\/figcaption><\/figure>\n

Standard Dimensions and Specifications<\/h2>\n

According to the American Water Works Association (AWWA) C151 standard, the nominal outside diameter (OD) of a 12-inch ductile iron pipe<\/a> is 13.20 inches (335.2 mm).<\/span> The wall thickness varies depending on the pressure class:<\/span><\/p>\n

\n
\n\n\n\n\n\n\n\n\n\n
Pressure Class<\/th>\nWall Thickness (inches)<\/th>\n<\/tr>\n<\/thead>\n
150<\/a><\/td>\n0.31<\/td>\n<\/tr>\n
200<\/td>\n0.31<\/td>\n<\/tr>\n
250<\/a><\/td>\n0.31<\/td>\n<\/tr>\n
300<\/td>\n0.31<\/td>\n<\/tr>\n
350<\/td>\n0.31<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

Wall Thickness and Pressure Class<\/h2>\n

The wall thickness of a ductile iron pipe is crucial for determining its pressure rating and structural integrity.<\/span> For a 12-inch pipe, the wall thickness remains constant across all pressure classes, as indicated in the table above.<\/span><\/p>\n

Internal Diameter Variations<\/h2>\n

The internal diameter (ID) of a ductile iron pipe can vary based on factors such as lining and coating.<\/span> For instance, a cement-lined 12-inch pipe may have a slightly reduced internal diameter compared to an unlined pipe.<\/span><\/p>\n

Weight Considerations<\/h2>\n

The weight of a 12-inch ductile iron pipe is influenced by its material composition and dimensions.<\/span> On average, a 12-inch pipe weighs approximately 50.7 pounds per foot (75.5 kg\/m).<\/span> When filled with water, the total weight increases to about 103 pounds per foot (153.5 kg\/m).<\/span><\/p>\n

Joint Types and Their Impact on Dimensions<\/h2>\n

Ductile iron pipes can be joined using various methods, including:<\/span><\/p>\n