5 inch Sch 80 pipe dimensions & weight
5 inch Sch 80 pipe (DN 125) — dimensions, weight and capacity per ASME B36.10M.
| Nominal size | 5" (DN 125) |
| Schedule | Sch 80 |
| Outside diameter | 141.3 mm (5.563 in) |
| Wall thickness | 9.53 mm (0.375 in) |
| Inside diameter | 122.24 mm (4.813 in) |
| Weight — carbon steel | 30.97 kg/m · 20.81 lb/ft |
| Weight — SS 304 / SS 316 | 31.29 / 31.48 kg/m |
| 6 m length (CS) | 185.8 kg |
| 20 ft length (CS) | 188.8 kg |
| Flow area | 117.36 cm² |
| Water capacity | 11.736 L/m |
| Outer surface (painting) | 0.4439 m²/m |
| Approx. max. working pressure* | 171 bar (2,478 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 5": Sch 10S · Sch 40 · Sch 160 · XXS · all 5" schedules
Frequently asked questions
What is the ID of 5 inch Sch 80 pipe?
122.24 mm (4.813 in), with OD 141.3 mm and wall 9.53 mm.
What is the weight of 5 inch Sch 80 pipe?
30.97 kg/m (20.81 lb/ft) in carbon steel; 185.8 kg per 6 m length.
What pressure can 5 inch Sch 80 pipe take?
Roughly 171 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