16 inch Sch 40 pipe dimensions & weight
16 inch Sch 40 pipe (DN 400) — dimensions, weight and capacity per ASME B36.10M.
| Nominal size | 16" (DN 400) |
| Schedule | Sch 40 |
| Outside diameter | 406.4 mm (16.000 in) |
| Wall thickness | 12.70 mm (0.500 in) |
| Inside diameter | 381.00 mm (15.000 in) |
| Weight — carbon steel | 123.30 kg/m · 82.86 lb/ft |
| Weight — SS 304 / SS 316 | 124.56 / 125.34 kg/m |
| 6 m length (CS) | 739.8 kg |
| 20 ft length (CS) | 751.6 kg |
| Flow area | 1140.09 cm² |
| Water capacity | 114.009 L/m |
| Outer surface (painting) | 1.2767 m²/m |
| Approx. max. working pressure* | 77 bar (1,118 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 16": Sch 10S · Sch 80 · Sch 160 · all 16" schedules
Frequently asked questions
What is the ID of 16 inch Sch 40 pipe?
381.00 mm (15.000 in), with OD 406.4 mm and wall 12.70 mm.
What is the weight of 16 inch Sch 40 pipe?
123.30 kg/m (82.86 lb/ft) in carbon steel; 739.8 kg per 6 m length.
What pressure can 16 inch Sch 40 pipe take?
Roughly 77 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