{"id":1568,"date":"2025-04-15T16:40:41","date_gmt":"2025-04-15T08:40:41","guid":{"rendered":"https:\/\/www.ductileironsuppliers.com\/?p=1568"},"modified":"2025-06-03T13:56:52","modified_gmt":"2025-06-03T05:56:52","slug":"what-is-the-outside-diameter-of-ductile-iron-pipe","status":"publish","type":"post","link":"https:\/\/www.ductileironsuppliers.com\/ar\/what-is-the-outside-diameter-of-ductile-iron-pipe.html","title":{"rendered":"\u0645\u0627 \u0647\u0648 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062e\u0627\u0631\u062c\u064a \u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u062d\u062f\u064a\u062f \u0627\u0644\u062f\u0643\u062a\u0627\u064a\u0644\u061f"},"content":{"rendered":"

The outside diameter (OD) of a ductile iron pipe refers to the external measurement across the pipe’s widest point.<\/span> This dimension is standardized to facilitate uniformity in fittings, joints, and installation procedures.<\/span><\/p>\n

\"What<\/a>
What Is the Outside Diameter of Ductile Iron Pipes<\/figcaption><\/figure>\n

Standard OD Dimensions According to AWWA C151\/A21.51<\/h3>\n

The American Water Works Association (AWWA) standard C151\/A21.51 specifies the OD for ductile iron pipes, ensuring consistency across various pressure classes.<\/span> Notably, the OD remains constant across different pressure classes, while the wall thickness varies to accommodate varying pressure requirements.<\/span><\/p>\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
Nominal Size (inches)<\/th>\nOutside Diameter (inches)<\/th>\n<\/tr>\n<\/thead>\n
3<\/span><\/td>\n3.96<\/span><\/td>\n<\/tr>\n
4<\/span><\/td>\n4.80<\/span><\/td>\n<\/tr>\n
6<\/span><\/td>\n6.90<\/span><\/td>\n<\/tr>\n
8<\/span><\/td>\n9.05<\/span><\/td>\n<\/tr>\n
10<\/span><\/td>\n11.10<\/span><\/td>\n<\/tr>\n
12<\/span><\/td>\n13.20<\/span><\/td>\n<\/tr>\n
14<\/span><\/td>\n15.30<\/span><\/td>\n<\/tr>\n
16<\/span><\/td>\n17.40<\/span><\/td>\n<\/tr>\n
18<\/span><\/td>\n19.50<\/span><\/td>\n<\/tr>\n
20<\/span><\/td>\n21.60<\/span><\/td>\n<\/tr>\n
24<\/span><\/td>\n25.80<\/span><\/td>\n<\/tr>\n
30<\/span><\/td>\n32.00<\/span><\/td>\n<\/tr>\n
36<\/span><\/td>\n38.30<\/span><\/td>\n<\/tr>\n
42<\/span><\/td>\n44.50<\/span><\/td>\n<\/tr>\n
48<\/span><\/td>\n50.80<\/span><\/td>\n<\/tr>\n
54<\/span><\/td>\n57.10<\/span><\/td>\n<\/tr>\n
60<\/span><\/td>\n63.30<\/span><\/td>\n<\/tr>\n
64<\/span><\/td>\n67.50<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

Source: U.S. Pipe \u2013 Thickness, Dimensions, and Weights<\/em><\/p>\n

Global Standards and Variations<\/h3>\n

While AWWA C151\/A21.51 is widely adopted in the United States, other regions have their own standards:<\/span>\u200b<\/p>\n