NPS 4 1/2 Double Extra Strong (XXS) Pipe
5.000 in (127.0 mm) outside diameter on a 0.710 in (18.0 mm) wall, giving a 3.580 in (90.9 mm) bore and 32.53 lb/ft (48.41 kg/m) empty. ASME B36.10M.
- Nominal size
- NPS 4 1/2 (DN 115)
- Schedule
- Double Extra Strong (XXS)
- Outside diameter
- 5.000 in (127.0 mm)
- Wall thickness
- 0.710 in (18.0 mm)
- Inside diameter
- 3.580 in (90.9 mm)
- Weight, empty
- 32.53 lb/ft (48.41 kg/m)
- Weight, water filled
- 36.89 lb/ft (54.91 kg/m)
- Flow area
- 10.066 in² (6494 mm²)
No other designation in NPS 4 1/2 shares this wall thickness, so Double Extra Strong (XXS) is unambiguous in this size.
Every schedule in NPS 4 1/2
Dimensions are given in inches, with the millimetre equivalent beneath in grey.
| Schedule | Wall thickness | Inside diameter | Weight, empty | Water (US gal/ft) |
|---|---|---|---|---|
| Sch 40 | 0.2476.27 mm | 4.506114.45 mm | 12.5418.66 kg/m | 0.828 |
| STD | 0.2476.27 mm | 4.506114.45 mm | 12.5418.66 kg/m | 0.828 |
| Sch 80 | 0.3559.02 mm | 4.290108.97 mm | 17.6126.21 kg/m | 0.751 |
| XS | 0.3559.02 mm | 4.290108.97 mm | 17.6126.21 kg/m | 0.751 |
| XXS this page | 0.71018.03 mm | 3.58090.93 mm | 32.5348.41 kg/m | 0.523 |
Weight is plain-end carbon steel, w = 10.6802 × t × (OD − t) lb/ft.
Common questions
What is the inside diameter of NPS 4 1/2 double extra strong (xxs) pipe?
3.580 in (90.9 mm). The outside diameter is fixed at 5.000 in (127.0 mm) by ASME B36.10M, and the 0.710 in (18.0 mm) wall takes 1.420 in off it — 0.710 in from each side — leaving that bore.
How much does NPS 4 1/2 double extra strong (xxs) pipe weigh?
32.53 lb/ft (48.41 kg/m) empty, as plain-end carbon steel. Full of water it comes to 36.89 lb/ft (54.91 kg/m), because the bore holds 0.523 US gallons per foot. One short ton of this pipe is about 61 ft.
Does NPS 4 1/2 double extra strong (xxs) pipe use special flanges or fittings?
No. Flanges and buttweld fittings are dimensioned from NPS, so NPS 4 1/2 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 3.580 in (90.9 mm) to match.