| NPS SIZE | OD(mm) | SCH5S | SCH10S | SCH10 | SCH20 | SCH30 | SCH40S&STD | SCH40 | SCH60 | SCH80S&XS | SCH80 | SCH100 | SCH120 | SCH140 | SCH160 | XXS |
| NPS 1/8 | 10.29 | - | 1.24 | - | - | - | 1.73 | 1.73 | - | 2.41 | 2.41 | - | - | - | - | - |
| NPS 1/4 | 13.72 | - | 1.65 | - | - | - | 1.73 | 1.73 | - | 3.02 | 3.02 | - | - | - | - | - |
| NPS 3/8 | 17.14 | - | 1.65 | - | - | - | 2.31 | 2.31 | - | 3.20 | 3.20 | - | - | - | - | - |
| NPS 1/2 | 21.34 | 1.65 | 2.11 | - | - | - | 2.77 | 2.77 | - | 3.73 | 3.73 | - | - | - | 4.75 | 4.75 |
| NPS 3/4 | 26.67 | 1.65 | 2.11 | 2.11 | - | - | 2.87 | 2.87 | - | 3.91 | 3.91 | - | - | - | 5.54 | 7.82 |
| NPS 1 | 33.4 | 1.65 | 2.77 | 2.77 | - | - | 3.38 | 3.38 | - | 4.55 | 4.55 | - | - | - | 6.35 | 9.09 |
| NPS 1 1/4 | 42.16 | 1.65 | 2.77 | 2.77 | - | - | 3.56 | 3.56 | - | 4.85 | 4.85 | - | - | - | 6.35 | 9.09 |
| NPS 1 1/2 | 48.26 | 1.65 | 2.77 | 2.77 | - | - | 3.68 | 3.68 | - | 5.08 | 5.08 | - | - | - | 7.14 | 10.16 |
| NPS 2 | 60.3 | - | - | - | - | - | 3.91 | 3.91 | - | 5.54 | 5.54 | - | - | - | 8.74 | 11.07 |
| NPS 2 1/2 | 73 | - | - | - | - | - | 5.16 | 5.16 | - | 7.01 | 7.01 | - | - | - | 9.53 | 14.02 |
| NPS 3 | 88.9 | - | - | - | - | - | 5.49 | 5.49 | - | 7.62 | 7.62 | - | - | - | 11.13 | 15.24 |
| NPS 3 1/2 | 101.6 | - | - | - | - | - | 5.74 | 5.74 | - | 8.08 | 8.08 | - | - | - | - | 16.15 |
| NPS 4 | 114.3 | - | - | - | - | - | 6.02 | 6.02 | - | 8.56 | 8.56 | - | 11.13 | - | 13.49 | 17.12 |
| NPS 5 | 141.3 | - | - | - | - | - | 6.55 | 6.55 | - | 9.53 | 9.53 | - | 12.70 | - | 15.88 | 19.05 |
| NPS 6 | 168.3 | - | - | - | - | - | 7.11 | 7.11 | - | 10.97 | 10.97 | - | 14.27 | - | 18.26 | 21.95 |
| NPS 8 | 219.1 | - | 3.76 | - | 6.35 | 7.04 | 8.18 | 8.18 | 10.31 | 12.70 | 12.70 | 15.09 | 18.26 | 20.62 | 23.01 | 22.23 |
| NPS 10 | 273.1 | - | 4.19 | - | 6.35 | 7.80 | 9.27 | 9.27 | 12.70 | 12.70 | 15.09 | 18.26 | 21.44 | 25.40 | 28.58 | 25.40 |
| NPS 12 | 323.9 | 3.96 | 4.57 | - | 6.35 | 8.38 | 9.53 | 10.31 | 14.27 | 12.70 | 17.48 | 21.44 | 25.40 | 28.58 | 33.32 | 25.40 |
| NPS 14 | 355.6 | 3.96 | 4.78 | 6.35 | 7.92 | 9.53 | 9.53 | 11.13 | 15.09 | 12.70 | 19.05 | 23.83 | 27.79 | 31.75 | 35.71 | - |
| NPS 16 | 406.4 | 4.19 | 4.78 | 6.35 | 7.92 | 9.53 | 9.53 | 12.70 | 16.66 | 12.70 | 21.44 | 26.19 | 30.96 | 36.53 | 40.49 | - |
