Literature and CatalogsPipe Outside Diameter Guide

Pipe Outside Diameter Guide

This Pipe O.D. Guide is furnished for your convenience and is based on the latest pipe standards and information supplied by pipe manufacturers. Due to occasional changes and variances in outside diameters, the pipe O.D. should always be verified before ordering fittings.

Small Diameter Pipe Sizes

 

Nominal Pipe Size (Inches) 1/2 3/4 1 1-1/4 1-1/2 2 2-1/2
Copper Tubing .63 .88 1.13 1.38 1.63 2.13 2.63
Steel & Plastic Pipe .84 1.05 1.32 1.66 1.90 2.38 2.88

 

Standard Pressure Pipe Sizes

 

PDF Icon PDF version of the table below.

Nominal Pipe Size (Inches) 3 4 5 6 8 10 12 14 15 16 18 20 24 30
Copper Tubing 3.13 4.13 5.13 6.13
Steel & Plastic Pipe (SDR 26.21 & Schedule) 3.50 4.50 5.56 6.63 8.63 10.75 12.75 14.00 16.00 18.00 20.00 24.00 30.00
4.13 6.14 8.16 10.20 12.24 15.30 18.70 22.05 24.80
Plastic Sewer Pipe (SDR 35) 4.22 6.26 8.40 10.50 12.50 15.30 18.70 24.80
Plastic (PVC) AWWA C-900/C-905/C-909 4.80 6.90 9.05 11.10 13.20 15.30 17.40 19.50 21.60 25.80
Polyehtylene Pipe (IPS Size) 3.50 4.50 6.63 8.63 10.75 12.75 14.00 16.00 18.00 20.00 24.00 30.00
Polyehtylene Pipe (DIP Size) 4.80 6.90 9.05 11.10 13.20 15.30 17.40 19.50 21.60 25.80 32.00
Ductile Iron Pipe 3.96 4.80 6.90 9.05 11.10 13.20 15.30 17.40 19.50 21.60 25.80 32.00
Class 100 - 250 AWWA 3.96 4.80 6.90 9.05 11.10 13.20 15.30 17.40 19.50 21.60 25.80 32.00
Class A AWWA PIT Cast 3.80 4.80 6.90 9.05 11.10 13.20 15.30 17.40 19.50 21.60 25.80 31.74
Class B AWWA PIT Cast 3.96 5.00 7.10 9.05 11.10 13.20 15.30 17.40 19.50 21.60 25.80 32.00
Class C - D AWWA PIT Cast 3.96 5.00 7.10 9.30 11.40 13.50 15.65 17.80 19.92 22.06 26.32
Machined End 3.74 4.64 6.91 9.11 11.24* 13.44* 15.07 17.15 19.90 22.12 26.48 33.12
Flintite Rough Barrel 3.94 4.90 7.13 9.33 11.30 13.42 15.45 17.60
Fluid-Tite Rough Barrel 3.93 5.05 7.16 9.32 11.46 13.70 15.36 17.50 20.44 22.50 27.17
Permaflex Rough Barrel 4.84 7.15 9.35 11.47 13.74 15.55 17.55 20.50 22.70 27.15
Ring-Tite Rough Barrel 3.95 4.92 7.19 9.39 11.47 13.74 15.51 17.65 20.44 22.68 27.12 33.80
Min. Standard Rough Barrel 4.79 7.05 9.22 11.25 13.37 15.36 17.50
Max. Standard Rough Barrel 5.26 7.40 9.57 11.77 14.04 15.80 17.94
Machined End 3.84 4.81 6.91 9.11 11.66 13.92 16.22 18.46 20.94 23.28 27.96 35.00
Flintite Rough Barrel 4.40 5.06 7.13 9.33 11.88 14.14 16.48 18.72
Fluid-Tite Rough Barrel 4.03 5.14 7.12 9.32 11.85 14.11 16.41 18.65 21.20 23.54 28.22
Permaflex Rough Barrel 5.00 7.20 9.40 11.92 14.20 16.50 18.75 21.30 23.64 28.32
Ring-Tite Rough Barrel 4.13 5.07 7.17 9.37 11.92 14.18 16.48 18.72 21.30 23.64 28.32 35.42
Min. Standard Rough Barrel 4.97 7.07 9.27 11.82 14.08 16.38 18.62
Max. Standard Rough Barrel 5.32 7.37 9.62 12.12 14.38 16.73 18.97
Machined End 3.84 4.81 6.91 9.11 11.66 13.92 16.22 18.46 22.18 24.66 29.62 37.06
Flintite Rough Barrel 4.17 5.32 7.26 9.44 11.88 14.14 16.53 18.84
Fluid-Tite Rough Barrel 4.18 5.32 7.36 9.46 11.88 14.11 16.44 18.74
Permaflex Rough Barrel 5.32 7.25 9.50 11.95 14.20 16.55 18.90 22.54 25.02 29.98
Ring-Tite Rough Barrel 4.17 5.33 7.32 9.50 11.92 14.18 16.59 18.90 22.54 25.02 29.98 37.48
Min. Standard Rough Barrel 5.22 7.26 9.39 11.77 14.03 16.44 18.74
Max. Standard Rough Barrel 5.57 7.60 9.79 12.12 14.38 16.88 19.19
Nominal Pipe Size (Inches) 3 4 5 6 8 10 12 14 15 16 18 20 24 30

* Flintite ME is 10.98 for 10" and 12.99 for 12" sizes.