NPS 30 Pipe Dimensions
Outside diameter 30.000 in (762.0 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 30
- Metric designator
- DN 750
- Outside diameter
- 30.000 in (762.0 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 30
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 | 0.2506.35 mm | 29.500749.30 mm | 79.43118.21 kg/m | 683.49 | 35.506 |
| Sch 10 | 0.3127.92 mm | 29.376746.15 mm | 98.93147.22 kg/m | 677.76 | 35.208 |
| Sch 20 | 0.50012.70 mm | 29.000736.60 mm | 157.53234.43 kg/m | 660.52 | 34.313 |
| Sch 30 | 0.62515.88 mm | 28.750730.25 mm | 196.08291.80 kg/m | 649.18 | 33.724 |
| STD | 0.3759.52 mm | 29.250742.95 mm | 118.65176.57 kg/m | 671.96 | 34.907 |
| XS | 0.50012.70 mm | 29.000736.60 mm | 157.53234.43 kg/m | 660.52 | 34.313 |
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 30 pipe?
NPS 30 pipe has an outside diameter of 30.000 in (762.0 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 30 schedule 40 pipe weigh?
118.65 lb/ft (176.57 kg/m) as plain-end carbon steel, on a wall thickness of 0.375 in (9.5 mm).
What is the metric equivalent of NPS 30?
DN 750. DN is a dimensionless designator, not a measurement — DN 750 pipe does not measure 750 mm anywhere. Its actual outside diameter is 762.0 mm.