1/2 inch Sch 160 pipe dimensions & weight
1/2 inch Sch 160 pipe (DN 15) — dimensions, weight and capacity per ASME B36.10M.
| Nominal size | 1/2" (DN 15) |
| Schedule | Sch 160 |
| Outside diameter | 21.3 mm (0.839 in) |
| Wall thickness | 4.78 mm (0.188 in) |
| Inside diameter | 11.74 mm (0.462 in) |
| Weight — carbon steel | 1.95 kg/m · 1.31 lb/ft |
| Weight — SS 304 / SS 316 | 1.97 / 1.98 kg/m |
| 6 m length (CS) | 11.7 kg |
| 20 ft length (CS) | 11.9 kg |
| Flow area | 1.08 cm² |
| Water capacity | 0.108 L/m |
| Outer surface (painting) | 0.0669 m²/m |
| Approx. max. working pressure* | 642 bar (9,319 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 1/2": Sch 10S · Sch 40 · Sch 80 · XXS · all 1/2" schedules
Frequently asked questions
What is the ID of 1/2 inch Sch 160 pipe?
11.74 mm (0.462 in), with OD 21.3 mm and wall 4.78 mm.
What is the weight of 1/2 inch Sch 160 pipe?
1.95 kg/m (1.31 lb/ft) in carbon steel; 11.7 kg per 6 m length.
What pressure can 1/2 inch Sch 160 pipe take?
Roughly 642 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