2-1/2 inch Sch 160 pipe dimensions & weight
2-1/2 inch Sch 160 pipe (DN 65) — dimensions, weight and capacity per ASME B36.10M.
| Nominal size | 2-1/2" (DN 65) |
| Schedule | Sch 160 |
| Outside diameter | 73.0 mm (2.874 in) |
| Wall thickness | 9.53 mm (0.375 in) |
| Inside diameter | 53.94 mm (2.124 in) |
| Weight — carbon steel | 14.92 kg/m · 10.03 lb/ft |
| Weight — SS 304 / SS 316 | 15.07 / 15.17 kg/m |
| 6 m length (CS) | 89.5 kg |
| 20 ft length (CS) | 91.0 kg |
| Flow area | 22.85 cm² |
| Water capacity | 2.285 L/m |
| Outer surface (painting) | 0.2293 m²/m |
| Approx. max. working pressure* | 347 bar (5,029 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 2-1/2": Sch 10S · Sch 40 · Sch 80 · XXS · all 2-1/2" schedules
Frequently asked questions
What is the ID of 2-1/2 inch Sch 160 pipe?
53.94 mm (2.124 in), with OD 73.0 mm and wall 9.53 mm.
What is the weight of 2-1/2 inch Sch 160 pipe?
14.92 kg/m (10.03 lb/ft) in carbon steel; 89.5 kg per 6 m length.
What pressure can 2-1/2 inch Sch 160 pipe take?
Roughly 347 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