1-1/2 inch Sch 80 pipe dimensions & weight
1-1/2 inch Sch 80 pipe (DN 40) — dimensions, weight and capacity per ASME B36.10M.
| Nominal size | 1-1/2" (DN 40) |
| Schedule | Sch 80 |
| Outside diameter | 48.3 mm (1.902 in) |
| Wall thickness | 5.08 mm (0.200 in) |
| Inside diameter | 38.14 mm (1.502 in) |
| Weight — carbon steel | 5.41 kg/m · 3.64 lb/ft |
| Weight — SS 304 / SS 316 | 5.47 / 5.50 kg/m |
| 6 m length (CS) | 32.5 kg |
| 20 ft length (CS) | 33.0 kg |
| Flow area | 11.42 cm² |
| Water capacity | 1.142 L/m |
| Outer surface (painting) | 0.1517 m²/m |
| Approx. max. working pressure* | 274 bar (3,974 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 1-1/2": Sch 10S · Sch 40 · Sch 160 · XXS · all 1-1/2" schedules
Frequently asked questions
What is the ID of 1-1/2 inch Sch 80 pipe?
38.14 mm (1.502 in), with OD 48.3 mm and wall 5.08 mm.
What is the weight of 1-1/2 inch Sch 80 pipe?
5.41 kg/m (3.64 lb/ft) in carbon steel; 32.5 kg per 6 m length.
What pressure can 1-1/2 inch Sch 80 pipe take?
Roughly 274 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