NPS 36 Pipe Dimensions
Outside diameter 36.000 in (914.4 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 36
- Metric designator
- DN 900
- Outside diameter
- 36.000 in (914.4 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 36
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 | 35.376898.55 mm | 118.92176.97 kg/m | 982.90 | 51.060 |
| Sch 20 | 0.50012.70 mm | 35.000889.00 mm | 189.57282.12 kg/m | 962.11 | 49.980 |
| Sch 30 | 0.62515.88 mm | 34.750882.65 mm | 236.13351.40 kg/m | 948.42 | 49.268 |
| Sch 40 | 0.75019.05 mm | 34.500876.30 mm | 282.36420.19 kg/m | 934.82 | 48.562 |
| STD | 0.3759.52 mm | 35.250895.35 mm | 142.68212.33 kg/m | 975.91 | 50.696 |
| XS | 0.50012.70 mm | 35.000889.00 mm | 189.57282.12 kg/m | 962.11 | 49.980 |
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 36 pipe?
NPS 36 pipe has an outside diameter of 36.000 in (914.4 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 36 schedule 40 pipe weigh?
282.36 lb/ft (420.19 kg/m) as plain-end carbon steel, on a wall thickness of 0.750 in (19.0 mm).
What is the metric equivalent of NPS 36?
DN 900. DN is a dimensionless designator, not a measurement — DN 900 pipe does not measure 900 mm anywhere. Its actual outside diameter is 914.4 mm.