NPS 34 Schedule 30 Pipe
34.000 in (863.6 mm) outside diameter on a 0.625 in (15.9 mm) wall, giving a 32.750 in (831.8 mm) bore and 222.78 lb/ft (331.54 kg/m) empty. ASME B36.10M.
- Nominal size
- NPS 34 (DN 850)
- Schedule
- Schedule 30
- Outside diameter
- 34.000 in (863.6 mm)
- Wall thickness
- 0.625 in (15.9 mm)
- Inside diameter
- 32.750 in (831.8 mm)
- Weight, empty
- 222.78 lb/ft (331.54 kg/m)
- Weight, water filled
- 587.98 lb/ft (875.01 kg/m)
- Flow area
- 842.389 in² (543475 mm²)
No other designation in NPS 34 shares this wall thickness, so Schedule 30 is unambiguous in this size.
Every schedule in NPS 34
Dimensions are given in inches, with the millimetre equivalent beneath in grey.
| Schedule | Wall thickness | Inside diameter | Weight, empty | Water (US gal/ft) |
|---|---|---|---|---|
| Sch 10 | 0.3127.92 mm | 33.376847.75 mm | 112.26167.05 kg/m | 45.449 |
| Sch 20 | 0.50012.70 mm | 33.000838.20 mm | 178.89266.22 kg/m | 44.431 |
| Sch 30 this page | 0.62515.88 mm | 32.750831.85 mm | 222.78331.54 kg/m | 43.760 |
| Sch 40 | 0.68817.48 mm | 32.624828.65 mm | 244.78364.27 kg/m | 43.424 |
| STD | 0.3759.52 mm | 33.250844.55 mm | 134.67200.41 kg/m | 45.107 |
| XS | 0.50012.70 mm | 33.000838.20 mm | 178.89266.22 kg/m | 44.431 |
Weight is plain-end carbon steel, w = 10.6802 × t × (OD − t) lb/ft.
Common questions
What is the inside diameter of NPS 34 schedule 30 pipe?
32.750 in (831.8 mm). The outside diameter is fixed at 34.000 in (863.6 mm) by ASME B36.10M, and the 0.625 in (15.9 mm) wall takes 1.250 in off it — 0.625 in from each side — leaving that bore.
How much does NPS 34 schedule 30 pipe weigh?
222.78 lb/ft (331.54 kg/m) empty, as plain-end carbon steel. Full of water it comes to 587.98 lb/ft (875.01 kg/m), because the bore holds 43.760 US gallons per foot. One short ton of this pipe is about 9 ft.
Does NPS 34 schedule 30 pipe use special flanges or fittings?
No. Flanges and buttweld fittings are dimensioned from NPS, so NPS 34 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 32.750 in (831.8 mm) to match.