Pipe size outside diameter. Data given in based on the NPS Tables given by ANSI B36.
Pipe size outside diameter For example, a 3/4" NPT pipe thread has an outside diameter of 1. Each thread size has a defined number of threads per inch (TPI). Simple-to-use and mobile friendly, this is a great tool for your pipe-buying toolbox. 5”. 050 inches. 000 Dia. 337 inches (8. Pipe size is specified with two non-dimensional numbers: a nominal pipe size (NPS) for diameter based on inches, and a schedule (Sched. 9″ NOT 1. Use our ANSI Pipe Schedule Chart to determine the nominal pipe size, wall thickness, weight and schedule designations of carbon and stainless steel pipes. ) for wall thickness. com Pipe Outside Diameter Chart Author: Rick Rackow Subject: Chart listing various pipes and their outside diameters Created Date: 9/20/2010 10:45:46 AM The outside diameter of each pipe must be measured for size identification. 30 mm), a wall thickness of 0. As for steel tube dimensions, the actual outside diameter is the same as the pipe number for all sizes. 237 inches (6. Engineering Data Table Specification 5C3 of the American Petroleum Institute standardizes 14 casing sizes from 4. 5 inches (11. 375-inch (60. Data given in based on the NPS Tables given by ANSI B36. API Casing 4. For sizes from 1/8-inch through 12-inch, the NPS corresponds to the nominal inside diameter, but differs somewhat from its actual inside diameter. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2. Standard size table comparison: The results will be compared with the steel pipe diameters comparison table, used to determine the nominal size (NPS) or metric specifications. Apr 15, 2025 · For pipe sizes with nominal bore (NB) of 14 inch (DN 350 mm) and above, the nominal bore is the same as the Outside Diameter (OD). This chart gives dimensional - size data for American National Standard Schedule 40 Welded and Seamless Steel Pipe. Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. Pipe Schedule Mar 24, 2025 · For example, the outside diameter of 6 inches, wall thickness of 0. 826 inches (97. Access our downloadable pipe schedule chart for accurate dimensions. 5″. 75 in (NPS 12, DN 300), the pipe’s actual diameter is larger than NPS (Nominal Pipe Size) or DN (Nominal Diameter). 500 inches (114. Proper pipe size measurements, including inside diameter (ID) for flow rate and outside diameter (OD) for fitting compatibility, are crucial. Mar 28, 2025 · The Difference in the Details: OD vs ID vs Nominal Pipe Size. or Sch. In plumbing pipe size is referred to as nominal pipe size - NPS, or "Nominal Pipe Size". 3 mm) outside In this standard, when the pipe’s Outer Diameter is smaller than 12. For pipe sizes with NB of 12 inch (DN 300 mm) and below, the nominal bore and outside diameter are different. 02 mm), giving a bore of 4. Once you know the OD, you will see a grouping of pipe with the same OD. The metric equivalent is called DN or "diametre nominel". 10M and API 5L . Mar 27, 2025 · When choosing a pipe for a specific project, consider the material’s durability, corrosion resistance, and cost-effectiveness. 026 inches (102. Rotate your phone sideways for a horizontal view to improve readability of the small text. 75 inches, or 324 mm. Related: Schedule 80 Steel Pipe Sizes & Dimensions ANSI; Schedule 40 Plastic PVC, CPVC Pipe Sizes & Dimensions; Schedule 80 Plastic PVC, CPVC Pipe Sizes & Dimension Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. For instance, a pipe with a 12 inch NB (DN 300 mm) has an OD of 12. See full list on archtoolbox. 10M and includes Pipe wall thickness, outside diameter, nominal diameter. American Piping Products Aug 23, 2018 · For example, for a 4” schedule 80 pipe, 4” is the nominal size of the pipe, while the actual outer diameter is 4. For instance, a 2-inch galvanized steel pipe has an inside diameter of about 2 1/8 inches and an outside diameter of about 2 5/8 inches. The table below cross-references the nominal dimension of a PIPE with its actual outside diameter. 26 mm) A 4 inches (100 mm) Schedule 80 pipe has an outside diameter of 4. Outer diameter is also known as outside diameter or external diameter. . 43 cm) to 20 inches (50. 500 - 5. 5 inches. 500 inches ( 114. The nominal pipe size (NPS) should align with industry standards. 25 inches of steel pipe, the inner diameter of 5. For example, a 1-1/2″ pipe size actually has an outside diameter of 1. If trying to determine the actual dimensions of a pipe inside diameter or pipe outside diameter have you running for a pipe size chart, you've run into one of the common issues with measuring the diameter of a pipe. 80 cm) outside diameter Get the right pipe for your job by using our online pipe-dimension calculator. 56 mm), giving a bore of 3. The following chart gives standard pipe schedule or pipes sizes as given by ANSI / ASME B36. How to identify pipe based on size (Outer Diameter, Inner Diameter, Wall Thickness) and Pipe Classification The chart you see below is sorted based on the OD (Outside Diameter) of the pipe. A 4 inches (100 mm) Schedule 40 pipe has an outside diameter of 4. Unlike the inner diameter, the pipe’s outer diameter is not dependent on its thickness. ycgzrevqxvtiufblnpeyvwkganamblewaddisrlgtfcjig