NPS 32 Pipe Dimensions
Outside diameter 32.000 in (812.8 mm) — fixed across every schedule. 6 wall thicknesses from ASME B36.10M, with bore, plain-end weight and flow area for each.
- Nominal size
- NPS 32
- Metric designator
- DN 800
- Outside diameter
- 32.000 in (812.8 mm)
- Schedules listed
- 6
- Standard weight wall
- 0.375 in (9.5 mm)
- Extra strong wall
- 0.500 in (12.7 mm)
Every schedule in NPS 32
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 10 | 0.3127.92 mm | 31.376796.95 mm | 105.59157.14 kg/m | 773.19 | 40.166 |
| Sch 20 | 0.50012.70 mm | 31.000787.40 mm | 168.21250.33 kg/m | 754.77 | 39.209 |
| Sch 30 | 0.62515.88 mm | 30.750781.05 mm | 209.43311.67 kg/m | 742.64 | 38.579 |
| Sch 40 | 0.68817.48 mm | 30.624777.85 mm | 230.08342.40 kg/m | 736.57 | 38.263 |
| STD | 0.3759.52 mm | 31.250793.75 mm | 126.66188.49 kg/m | 766.99 | 39.844 |
| XS | 0.50012.70 mm | 31.000787.40 mm | 168.21250.33 kg/m | 754.77 | 39.209 |
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 does not coincide with any numbered schedule in this size. Extra strong equals Schedule 20.
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 32 pipe?
NPS 32 pipe has an outside diameter of 32.000 in (812.8 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 32 schedule 40 pipe weigh?
230.08 lb/ft (342.40 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 32?
DN 800. DN is a dimensionless designator, not a measurement — DN 800 pipe does not measure 800 mm anywhere. Its actual outside diameter is 812.8 mm.