This reference compilation presents comprehensive pipe schedule data across the complete spectrum of standard nominal pipe sizes (NPS) ranging from NPS 1/8 to NPS 48, including non-standard intermediate sizes. Wall thickness values are presented in accordance with the following schedule classifications:
Standard Pipe Schedule Table
| Nominal Pipe Size (inches) |
Outside Diameter (inches) |
Wall Thickness (inches) by Schedule | |||||||
|---|---|---|---|---|---|---|---|---|---|
| 5S | 5 | 10S | 10 | 20 | 30 | 40S & STD | 40 | ||
| 1/8 | 0.405 | 0.035 | – | 0.049 | 0.049 | – | – | 0.068 | 0.068 |
| 1/4 | 0.540 | 0.049 | – | 0.065 | 0.065 | – | – | 0.088 | 0.088 |
| 3/8 | 0.675 | 0.049 | – | 0.065 | 0.065 | – | – | 0.091 | 0.091 |
| 1/2 | 0.840 | 0.065 | – | 0.083 | 0.083 | – | – | 0.109 | 0.109 |
| 3/4 | 1.050 | 0.065 | – | 0.083 | 0.083 | – | – | 0.113 | 0.113 |
| 1 | 1.315 | 0.065 | – | 0.109 | 0.109 | – | – | 0.133 | 0.133 |
| 1-1/4 | 1.660 | 0.065 | – | 0.109 | 0.109 | – | – | 0.140 | 0.140 |
| 1-1/2 | 1.900 | 0.065 | – | 0.109 | 0.109 | – | – | 0.145 | 0.145 |
| 2 | 2.375 | 0.065 | – | 0.109 | 0.109 | – | – | 0.154 | 0.154 |
| 2-1/2 | 2.875 | 0.083 | – | 0.120 | 0.120 | – | – | 0.203 | 0.203 |
| 3 | 3.500 | 0.083 | – | 0.120 | 0.120 | – | – | 0.216 | 0.216 |
| 3-1/2 | 4.000 | 0.083 | – | 0.120 | 0.120 | – | – | 0.226 | 0.226 |
| 4 | 4.500 | 0.083 | – | 0.120 | 0.120 | – | – | 0.237 | 0.237 |
| 4-1/2 | 5.000 | 0.083 | – | 0.120 | 0.120 | – | – | 0.247 | 0.247 |
| 6 | 6.625 | 0.109 | – | 0.134 | 0.134 | – | – | 0.280 | 0.280 |
| 8 | 8.625 | 0.109 | 0.109 | 0.148 | 0.148 | 0.148 | 0.200 | 0.322 | 0.322 |
| 10 | 10.750 | 0.134 | 0.134 | 0.165 | 0.165 | 0.165 | 0.250 | 0.365 | 0.365 |
| 12 | 12.750 | 0.156 | 0.156 | 0.180 | 0.180 | 0.180 | 0.250 | 0.375 | 0.406 |
| 14 | 14.000 | 0.156 | 0.156 | 0.188 | 0.188 | 0.188 | 0.250 | 0.375 | 0.438 |
| 16 | 16.000 | 0.165 | 0.165 | 0.188 | 0.188 | 0.188 | 0.250 | 0.375 | 0.500 |
| 18 | 18.000 | 0.165 | 0.165 | 0.188 | 0.188 | 0.188 | 0.281 | 0.375 | 0.562 |
| 20 | 20.000 | 0.188 | 0.188 | 0.218 | 0.218 | 0.218 | 0.312 | 0.375 | 0.594 |
| 24 | 24.000 | 0.218 | 0.218 | 0.250 | 0.250 | 0.250 | 0.375 | 0.375 | 0.688 |
| 26 | 26.000 | 0.250 | 0.250 | 0.312 | 0.312 | 0.312 | 0.375 | 0.375 | 0.750 |
| 28 | 28.000 | 0.250 | 0.250 | 0.312 | 0.312 | 0.312 | 0.375 | 0.375 | 0.750 |
| 30 | 30.000 | 0.250 | 0.250 | 0.312 | 0.312 | 0.312 | 0.375 | 0.375 | 0.750 |
| 32 | 32.000 | 0.250 | 0.250 | 0.312 | 0.312 | 0.312 | 0.375 | 0.375 | 0.750 |
| 34 | 34.000 | 0.250 | 0.250 | 0.312 | 0.312 | 0.312 | 0.375 | 0.375 | 0.750 |
| 36 | 36.000 | 0.250 | 0.250 | 0.312 | 0.312 | 0.312 | 0.375 | 0.375 | 0.750 |
| 42 | 42.000 | 0.250 | 0.250 | 0.312 | 0.312 | 0.312 | 0.375 | 0.375 | 0.750 |
| 48 | 48.000 | 0.250 | 0.250 | 0.312 | 0.312 | 0.312 | 0.375 | 0.375 | 0.750 |
Standard Pipe Schedule Table – Heavy Wall Schedules
| Nominal Pipe Size (inches) |
Outside Diameter (inches) |
Wall Thickness (inches) by Schedule | |||||||
|---|---|---|---|---|---|---|---|---|---|
| 60 | 80S & EH | 80 | 100 | 120 | 140 | 160 | Double EH | ||
| 1/8 | 0.405 | – | 0.095 | 0.095 | – | – | – | – | – |
| 1/4 | 0.540 | – | 0.119 | 0.119 | – | – | – | – | – |
| 3/8 | 0.675 | – | 0.126 | 0.126 | – | – | – | – | – |
| 1/2 | 0.840 | – | 0.147 | 0.147 | 0.188 | – | – | 0.294 | – |
| 3/4 | 1.050 | – | 0.154 | 0.154 | 0.219 | – | – | 0.308 | – |
| 1 | 1.315 | – | 0.179 | 0.179 | 0.250 | – | – | 0.358 | – |
| 1-1/4 | 1.660 | – | 0.191 | 0.191 | 0.250 | – | – | 0.382 | – |
| 1-1/2 | 1.900 | – | 0.200 | 0.200 | 0.281 | – | – | 0.400 | – |
| 2 | 2.375 | – | 0.218 | 0.218 | 0.344 | – | – | 0.436 | – |
| 2-1/2 | 2.875 | – | 0.276 | 0.276 | 0.375 | – | – | 0.552 | – |
| 3 | 3.500 | – | 0.300 | 0.300 | 0.438 | – | – | 0.600 | – |
| 3-1/2 | 4.000 | – | 0.318 | 0.318 | 0.500 | – | – | 0.636 | – |
| 4 | 4.500 | – | 0.337 | 0.337 | 0.531 | – | – | 0.674 | – |
| 4-1/2 | 5.000 | – | 0.355 | 0.355 | 0.562 | – | – | 0.710 | – |
| 6 | 6.625 | – | 0.432 | 0.432 | 0.719 | – | – | 0.864 | – |
| 8 | 8.625 | 0.406 | 0.500 | 0.500 | 0.812 | 0.906 | – | 0.875 | 1.000 |
| 10 | 10.750 | 0.500 | 0.594 | 0.594 | 0.844 | 1.000 | 1.125 | 1.000 | 1.188 |
| 12 | 12.750 | 0.562 | 0.688 | 0.688 | 1.000 | 1.125 | 1.312 | 1.125 | 1.375 |
| 14 | 14.000 | 0.594 | 0.750 | 0.750 | 1.094 | 1.250 | 1.406 | 1.250 | 1.500 |
| 16 | 16.000 | 0.656 | 0.844 | 0.844 | 1.156 | 1.375 | 1.562 | 1.375 | 1.688 |
| 18 | 18.000 | 0.750 | 0.938 | 0.938 | 1.281 | 1.500 | 1.781 | 1.500 | 1.875 |
| 20 | 20.000 | 0.812 | 1.031 | 1.031 | 1.375 | 1.625 | 1.968 | 1.625 | 2.062 |
| 24 | 24.000 | 0.969 | 1.219 | 1.219 | 1.531 | 1.875 | 2.343 | 1.875 | 2.438 |
| 26 | 26.000 | 1.000 | 1.250 | 1.250 | 1.625 | 2.000 | 2.375 | 2.000 | 2.500 |
| 28 | 28.000 | 1.062 | 1.312 | 1.312 | 1.688 | 2.125 | 2.500 | 2.125 | 2.625 |
| 30 | 30.000 | 1.125 | 1.375 | 1.375 | 1.750 | 2.250 | 2.625 | 2.250 | 2.750 |
| 32 | 32.000 | 1.188 | 1.438 | 1.438 | 1.875 | 2.375 | 2.750 | 2.375 | 2.875 |
| 34 | 34.000 | 1.250 | 1.500 | 1.500 | 1.938 | 2.500 | 2.875 | 2.500 | 3.000 |
| 36 | 36.000 | 1.312 | 1.562 | 1.562 | 2.000 | 2.625 | 3.000 | 2.625 | 3.125 |
| 42 | 42.000 | 1.438 | 1.750 | 1.750 | 2.250 | 3.000 | 3.500 | 3.000 | 3.625 |
| 48 | 48.000 | 1.562 | 2.000 | 2.000 | 2.500 | 3.500 | 4.000 | 3.500 | 4.125 |
Notes on the table:
- 5S, 10S: These are thin-walled stainless steel pipe schedules per ASME B36.19M
- 5, 10, 20, 30: These are standard carbon steel pipe schedules per ASME B36.10M
- 40S & STD: Standard weight (STD) is typically equivalent to Schedule 40S in sizes 1/8″ through 10″
- 60, 80, 100, 120, 140, 160: These are standard heavy-wall pipe schedules per ASME B36.10M
- 80S & EH: Extra Heavy (EH) is typically equivalent to Schedule 80S in many sizes
- EH: Double Extra Heavy wall pipes for extremely high-pressure applications
Find a large array of pipe fittings at MISUMI USA, and find more charts and articles at MISUMI’s Mech Lab Blog.
Author: Scott Bredemann | Updated: 4/11/2025
Disclaimer
The content on this webpage is for informational purposes only. MISUMI makes no guarantees, expressed or implied, regarding the accuracy, completeness, or validity of the information. Performance parameters, tolerances, designs, materials, or processes should not be assumed to reflect third-party suppliers’ or manufacturers’ deliverables within MISUMI’s network. Buyers are responsible for specifying their part requirements.