3/8 inch Sch 80 pipe dimensions & weight
3/8 inch Sch 80 pipe (DN 10) — dimensions, weight and capacity per ASME B36.10M.
| Nominal size | 3/8" (DN 10) |
| Schedule | Sch 80 |
| Outside diameter | 17.1 mm (0.673 in) |
| Wall thickness | 3.20 mm (0.126 in) |
| Inside diameter | 10.70 mm (0.421 in) |
| Weight — carbon steel | 1.10 kg/m · 0.74 lb/ft |
| Weight — SS 304 / SS 316 | 1.11 / 1.12 kg/m |
| 6 m length (CS) | 6.6 kg |
| 20 ft length (CS) | 6.7 kg |
| Flow area | 0.90 cm² |
| Water capacity | 0.090 L/m |
| Outer surface (painting) | 0.0537 m²/m |
| Approx. max. working pressure* | 520 bar (7,537 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 3/8": Sch 10S · Sch 40 · all 3/8" schedules
Frequently asked questions
What is the ID of 3/8 inch Sch 80 pipe?
10.70 mm (0.421 in), with OD 17.1 mm and wall 3.20 mm.
What is the weight of 3/8 inch Sch 80 pipe?
1.10 kg/m (0.74 lb/ft) in carbon steel; 6.6 kg per 6 m length.
What pressure can 3/8 inch Sch 80 pipe take?
Roughly 520 bar at ambient for seamless A106 Gr B under ASME B31.3 with no corrosion allowance; actual rating depends on material, temperature and code.
By Piping Supply Journal Editorial Team · Published · Last updated