# 20 inch Sch 10S pipe dimensions & weight

> 20" Sch 10S pipe (DN 500): OD 508.0 mm, wall 5.54 mm, ID 496.92 mm, weight 68.64 kg/m, water capacity and approximate pressure rating.

Source: https://pipingsupplyjournal.com/20-inch-schedule-10s-pipe.html  
Publisher: Piping Supply Journal (Piping Supply Journal Editorial Team) · Published 2026-11-03 · Updated 2026-11-04

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](https://pipingsupplyjournal.com/pipe-wall-thickness-calculator.html) for your own design conditions.

Other schedules for 20": [Sch 40](https://pipingsupplyjournal.com/20-inch-schedule-40-pipe.html) · [Sch 80](https://pipingsupplyjournal.com/20-inch-schedule-80-pipe.html) · [Sch 160](https://pipingsupplyjournal.com/20-inch-schedule-160-pipe.html) · [all 20" schedules](https://pipingsupplyjournal.com/20-inch-pipe-dimensions.html)

## 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.

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Data is for reference; verify against the current edition of the governing standard. Quotations: https://pipingsupplyjournal.com/get-quote.html