4 inch Sch 160 pipe dimensions & weight
4 inch Sch 160 pipe (DN 100) — dimensions, weight and capacity per ASME B36.10M.
| Nominal size | 4" (DN 100) |
| Schedule | Sch 160 |
| Outside diameter | 114.3 mm (4.500 in) |
| Wall thickness | 13.49 mm (0.531 in) |
| Inside diameter | 87.32 mm (3.438 in) |
| Weight — carbon steel | 33.54 kg/m · 22.54 lb/ft |
| Weight — SS 304 / SS 316 | 33.88 / 34.10 kg/m |
| 6 m length (CS) | 201.2 kg |
| 20 ft length (CS) | 204.5 kg |
| Flow area | 59.88 cm² |
| Water capacity | 5.988 L/m |
| Outer surface (painting) | 0.3591 m²/m |
| Approx. max. working pressure* | 310 bar (4,503 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 4": Sch 10S · Sch 40 · Sch 80 · XXS · all 4" schedules
Frequently asked questions
What is the ID of 4 inch Sch 160 pipe?
87.32 mm (3.438 in), with OD 114.3 mm and wall 13.49 mm.
What is the weight of 4 inch Sch 160 pipe?
33.54 kg/m (22.54 lb/ft) in carbon steel; 201.2 kg per 6 m length.
What pressure can 4 inch Sch 160 pipe take?
Roughly 310 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