20 inch Sch 10S pipe dimensions & weight
20 inch Sch 10S pipe (DN 500) — dimensions, weight and capacity per ASME B36.19M.
| Nominal size | 20" (DN 500) |
| Schedule | Sch 10S |
| Outside diameter | 508.0 mm (20.000 in) |
| Wall thickness | 5.54 mm (0.218 in) |
| Inside diameter | 496.92 mm (19.564 in) |
| Weight — carbon steel | 68.64 kg/m · 46.13 lb/ft |
| Weight — SS 304 / SS 316 | 69.34 / 69.78 kg/m |
| 6 m length (CS) | 411.8 kg |
| 20 ft length (CS) | 418.4 kg |
| Flow area | 1939.38 cm² |
| Water capacity | 193.938 L/m |
| Outer surface (painting) | 1.5959 m²/m |
| Approx. max. working pressure* | 22 bar (321 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 20": Sch 40 · Sch 80 · Sch 160 · all 20" schedules
Frequently asked questions
What is the ID of 20 inch Sch 10S pipe?
496.92 mm (19.564 in), with OD 508.0 mm and wall 5.54 mm.
What is the weight of 20 inch Sch 10S pipe?
68.64 kg/m (46.13 lb/ft) in carbon steel; 411.8 kg per 6 m length.
What pressure can 20 inch Sch 10S pipe take?
Roughly 22 bar at ambient for seamless A312 TP316L 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