NPS 30 Standard (STD) Pipe
30.000 in (762.0 mm) outside diameter on a 0.375 in (9.5 mm) wall, giving a 29.250 in (742.9 mm) bore and 118.65 lb/ft (176.57 kg/m) empty. ASME B36.10M.
- Nominal size
- NPS 30 (DN 750)
- Schedule
- Standard (STD)
- Outside diameter
- 30.000 in (762.0 mm)
- Wall thickness
- 0.375 in (9.5 mm)
- Inside diameter
- 29.250 in (742.9 mm)
- Weight, empty
- 118.65 lb/ft (176.57 kg/m)
- Weight, water filled
- 409.96 lb/ft (610.09 kg/m)
- Flow area
- 671.957 in² (433520 mm²)
No other designation in NPS 30 shares this wall thickness, so Standard (STD) is unambiguous in this size.
Every schedule in NPS 30
Dimensions are given in inches, with the millimetre equivalent beneath in grey.
| Schedule | Wall thickness | Inside diameter | Weight, empty | Water (US gal/ft) |
|---|---|---|---|---|
| Sch 5 | 0.2506.35 mm | 29.500749.30 mm | 79.43118.21 kg/m | 35.506 |
| Sch 10 | 0.3127.92 mm | 29.376746.15 mm | 98.93147.22 kg/m | 35.208 |
| Sch 20 | 0.50012.70 mm | 29.000736.60 mm | 157.53234.43 kg/m | 34.313 |
| Sch 30 | 0.62515.88 mm | 28.750730.25 mm | 196.08291.80 kg/m | 33.724 |
| STD this page | 0.3759.52 mm | 29.250742.95 mm | 118.65176.57 kg/m | 34.907 |
| XS | 0.50012.70 mm | 29.000736.60 mm | 157.53234.43 kg/m | 34.313 |
Weight is plain-end carbon steel, w = 10.6802 × t × (OD − t) lb/ft.
Common questions
What is the inside diameter of NPS 30 standard (std) pipe?
29.250 in (742.9 mm). The outside diameter is fixed at 30.000 in (762.0 mm) by ASME B36.10M, and the 0.375 in (9.5 mm) wall takes 0.750 in off it — 0.375 in from each side — leaving that bore.
How much does NPS 30 standard (std) pipe weigh?
118.65 lb/ft (176.57 kg/m) empty, as plain-end carbon steel. Full of water it comes to 409.96 lb/ft (610.09 kg/m), because the bore holds 34.907 US gallons per foot. One short ton of this pipe is about 17 ft.
Does NPS 30 standard (std) pipe use special flanges or fittings?
No. Flanges and buttweld fittings are dimensioned from NPS, so NPS 30 hardware fits this pipe in any schedule. The one thing that does follow the schedule is the bore of a weld neck flange or a fitting end prep, which has to be 29.250 in (742.9 mm) to match.