6 inch Sch 40 pipe dimensions & weight
6 inch Sch 40 pipe (DN 150) — dimensions, weight and capacity per ASME B36.10M.
| Nominal size | 6" (DN 150) |
| Schedule | Sch 40 |
| Outside diameter | 168.3 mm (6.626 in) |
| Wall thickness | 7.11 mm (0.280 in) |
| Inside diameter | 154.08 mm (6.066 in) |
| Weight — carbon steel | 28.26 kg/m · 18.99 lb/ft |
| Weight — SS 304 / SS 316 | 28.55 / 28.73 kg/m |
| 6 m length (CS) | 169.6 kg |
| 20 ft length (CS) | 172.3 kg |
| Flow area | 186.46 cm² |
| Water capacity | 18.646 L/m |
| Outer surface (painting) | 0.5287 m²/m |
| Approx. max. working pressure* | 105 bar (1,524 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 6": Sch 10S · Sch 80 · Sch 160 · XXS · all 6" schedules
Frequently asked questions
What is the ID of 6 inch Sch 40 pipe?
154.08 mm (6.066 in), with OD 168.3 mm and wall 7.11 mm.
What is the weight of 6 inch Sch 40 pipe?
28.26 kg/m (18.99 lb/ft) in carbon steel; 169.6 kg per 6 m length.
What pressure can 6 inch Sch 40 pipe take?
Roughly 105 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