NPS 24 Pipe Dimensions
Outside diameter 24.000 in (609.6 mm) — fixed across every schedule. 13 wall thicknesses from ASME B36.10M, with bore, plain-end weight and flow area for each.
- Nominal size
- NPS 24
- Metric designator
- DN 600
- Outside diameter
- 24.000 in (609.6 mm)
- Schedules listed
- 13
- Standard weight wall
- 0.375 in (9.5 mm)
- Extra strong wall
- 0.500 in (12.7 mm)
Every schedule in NPS 24
Dimensions are given in inches, with the millimetre equivalent beneath in grey.
| Schedule | Wall thickness | Inside diameter | Weight, empty | Flow area (in²) | Water (US gal/ft) |
|---|---|---|---|---|---|
| Sch 5 | 0.2185.54 mm | 23.564598.53 mm | 55.3782.40 kg/m | 436.10 | 22.655 |
| Sch 10 | 0.2506.35 mm | 23.500596.90 mm | 63.4194.37 kg/m | 433.74 | 22.532 |
| Sch 20 | 0.3759.52 mm | 23.250590.55 mm | 94.62140.81 kg/m | 424.56 | 22.055 |
| Sch 30 | 0.56214.27 mm | 22.876581.05 mm | 140.68209.36 kg/m | 411.01 | 21.351 |
| Sch 40 | 0.68817.48 mm | 22.624574.65 mm | 171.30254.92 kg/m | 402.00 | 20.883 |
| STD | 0.3759.52 mm | 23.250590.55 mm | 94.62140.81 kg/m | 424.56 | 22.055 |
| Sch 60 | 0.96924.61 mm | 22.062560.37 mm | 238.35354.70 kg/m | 382.28 | 19.859 |
| Sch 80 | 1.21930.96 mm | 21.562547.67 mm | 296.59441.37 kg/m | 365.15 | 18.969 |
| XS | 0.50012.70 mm | 23.000584.20 mm | 125.49186.75 kg/m | 415.48 | 21.583 |
| Sch 100 | 1.53138.89 mm | 20.938531.83 mm | 367.40546.75 kg/m | 344.32 | 17.887 |
| Sch 120 | 1.81246.02 mm | 20.376517.55 mm | 429.39639.01 kg/m | 326.08 | 16.939 |
| Sch 140 | 2.06252.37 mm | 19.876504.85 mm | 483.13718.98 kg/m | 310.28 | 16.118 |
| Sch 160 | 2.34459.54 mm | 19.312490.52 mm | 542.14806.80 kg/m | 292.92 | 15.216 |
Weight is calculated for carbon steel as w = 10.6802 × t × (OD − t) lb/ft and is the plain-end weight, excluding coatings, linings and fittings.
Standard weight equals Schedule 20 in this size. Extra strong does not coincide with a numbered schedule here.
This size, schedule by schedule
A page for each combination, with bore, weight, water capacity and the matching flange and fitting data.
This size in a schedule chart
Common questions
What is the outside diameter of NPS 24 pipe?
NPS 24 pipe has an outside diameter of 24.000 in (609.6 mm). That outside diameter is fixed: it is identical in every schedule, and only the wall thickness — and therefore the bore — changes from one schedule to the next.
How much does NPS 24 schedule 40 pipe weigh?
171.30 lb/ft (254.92 kg/m) as plain-end carbon steel, on a wall thickness of 0.688 in (17.5 mm).
What is the metric equivalent of NPS 24?
DN 600. DN is a dimensionless designator, not a measurement — DN 600 pipe does not measure 600 mm anywhere. Its actual outside diameter is 609.6 mm.