1/4 inch Sch 10S pipe dimensions & weight
1/4 inch Sch 10S pipe (DN 8) — dimensions, weight and capacity per ASME B36.19M.
| Nominal size | 1/4" (DN 8) |
| Schedule | Sch 10S |
| Outside diameter | 13.7 mm (0.539 in) |
| Wall thickness | 1.65 mm (0.065 in) |
| Inside diameter | 10.40 mm (0.409 in) |
| Weight — carbon steel | 0.49 kg/m · 0.33 lb/ft |
| Weight — SS 304 / SS 316 | 0.49 / 0.50 kg/m |
| 6 m length (CS) | 2.9 kg |
| 20 ft length (CS) | 3.0 kg |
| Flow area | 0.85 cm² |
| Water capacity | 0.085 L/m |
| Outer surface (painting) | 0.0430 m²/m |
| Approx. max. working pressure* | 265 bar (3,839 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 1/4": Sch 40 · Sch 80 · all 1/4" schedules
Frequently asked questions
What is the ID of 1/4 inch Sch 10S pipe?
10.40 mm (0.409 in), with OD 13.7 mm and wall 1.65 mm.
What is the weight of 1/4 inch Sch 10S pipe?
0.49 kg/m (0.33 lb/ft) in carbon steel; 2.9 kg per 6 m length.
What pressure can 1/4 inch Sch 10S pipe take?
Roughly 265 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