3-1/2 inch Sch 10S pipe dimensions & weight
3-1/2 inch Sch 10S pipe (DN 90) — dimensions, weight and capacity per ASME B36.19M.
| Nominal size | 3-1/2" (DN 90) |
| Schedule | Sch 10S |
| Outside diameter | 101.6 mm (4.000 in) |
| Wall thickness | 3.05 mm (0.120 in) |
| Inside diameter | 95.50 mm (3.760 in) |
| Weight — carbon steel | 7.41 kg/m · 4.98 lb/ft |
| Weight — SS 304 / SS 316 | 7.49 / 7.53 kg/m |
| 6 m length (CS) | 44.5 kg |
| 20 ft length (CS) | 45.2 kg |
| Flow area | 71.63 cm² |
| Water capacity | 7.163 L/m |
| Outer surface (painting) | 0.3192 m²/m |
| Approx. max. working pressure* | 62 bar (895 psi) — A312 TP316L |
*Approximate ASME B31.3 straight-pipe rating at ≤ 38 °C for seamless A312 TP316L (S = 115.0 MPa, E = 1, 12.5% mill tolerance, no corrosion allowance). Use the wall thickness calculator for your own design conditions.
Other schedules for 3-1/2": Sch 40 · Sch 80 · all 3-1/2" schedules
Frequently asked questions
What is the ID of 3-1/2 inch Sch 10S pipe?
95.50 mm (3.760 in), with OD 101.6 mm and wall 3.05 mm.
What is the weight of 3-1/2 inch Sch 10S pipe?
7.41 kg/m (4.98 lb/ft) in carbon steel; 44.5 kg per 6 m length.
What pressure can 3-1/2 inch Sch 10S pipe take?
Roughly 62 bar at ambient for seamless A312 TP316L under ASME B31.3 with no corrosion allowance; actual rating depends on material, temperature and code.
Last updated 2026-11-02