Pipe Size Chart in mm and Inches

Pipes come in various sizes and they are mandatory for countless jobs and purposes. However, this also suggests that there are a lot of differences and a lot of different pipe sizes. The best thing you can do is take a look at the chart below. We have prepared a full table with all the sizes and all the details. You can see the nominal size of a pipe in inches and in metric values. We will present you KS/JIS standards and also ISO, DIN and ASTM. This refers to the carbon steel pipe. For Cu-Ni Pipe – OD pipes we have prepared an additional section where you can see the inches, metric size and additional European sizes. All the information and details are double-checked and we stay behind our details. There are no errors and there are no possible issues or complications. The chart is based on latest trustworthy values used in various industries.

 

Nominal Size in inchesNominal Size (metric)Carbon steel pipe KS/JIS standardCarbon steel pipe ASTMCarbon steel pipe ISO RuleCarbon steel pipe DINCu-Ni Pipe - OD (metric)Cu-Ni Pipe - OD inchesvarious european sizes
1/83.210.510.310.210.2
1/46.413.813.713.513.5
3/89.517.317.117.217.2
1/212.721.721.321.321.3
3/42027.226.726.926.926.9
1253433.433.733.73028.2433.7
1-1/43242.742.242.442.43834.5938
1-1/24048.648.348.348.344.540.9444.5
5054
5057
25060.560.360.360.35754.0560.3
6569
2-1/26576.37376.176.176.166.7576.1
84
38089.188.988.988.988.979.8588.9
3-1/290101.6101.6101.6
4100104
108
4100114.3114.3114.3114.3108106.27114.3
129
5125139.8141.3139.7139.7133131.67139.7
154
6150165.2168.3168.3168.3159157.68168.3
204
8200216.3219.1219.1219.1219208.48219
254
267
10250267.4273.1273273267260.5273
304
12300318.5323.9323.9323.9323.9312.11323.9
14350355.6355.6355.6355.6368363.72
16400406.4406.4406.4406.4419414.52
18450457.2457.2457.2457.2457.2465.32
20500508508508508508516.94