3 inch Sch 80 pipe dimensions & weight
3 inch Sch 80 pipe (DN 80) — dimensions, weight and capacity per ASME B36.10M.
| Nominal size | 3" (DN 80) |
| Schedule | Sch 80 |
| Outside diameter | 88.9 mm (3.500 in) |
| Wall thickness | 7.62 mm (0.300 in) |
| Inside diameter | 73.66 mm (2.900 in) |
| Weight — carbon steel | 15.27 kg/m · 10.26 lb/ft |
| Weight — SS 304 / SS 316 | 15.43 / 15.52 kg/m |
| 6 m length (CS) | 91.6 kg |
| 20 ft length (CS) | 93.1 kg |
| Flow area | 42.61 cm² |
| Water capacity | 4.261 L/m |
| Outer surface (painting) | 0.2793 m²/m |
| Approx. max. working pressure* | 220 bar (3,192 psi) — A106 Gr B |
*Approximate ASME B31.3 straight-pipe rating at ≤ 38 °C for seamless A106 Gr B (S = 137.9 MPa, E = 1, 12.5% mill tolerance, no corrosion allowance). Use the wall thickness calculator for your own design conditions.
Other schedules for 3": Sch 10S · Sch 40 · Sch 160 · XXS · all 3" schedules
Frequently asked questions
What is the ID of 3 inch Sch 80 pipe?
73.66 mm (2.900 in), with OD 88.9 mm and wall 7.62 mm.
What is the weight of 3 inch Sch 80 pipe?
15.27 kg/m (10.26 lb/ft) in carbon steel; 91.6 kg per 6 m length.
What pressure can 3 inch Sch 80 pipe take?
Roughly 220 bar at ambient for seamless A106 Gr B under ASME B31.3 with no corrosion allowance; actual rating depends on material, temperature and code.
Last updated 2026-11-02