# 3/4 inch XXS pipe dimensions & weight

> 3/4" XXS pipe (DN 20): OD 26.7 mm, wall 7.82 mm, ID 11.06 mm, weight 3.64 kg/m, water capacity and approximate pressure rating.

Source: https://pipingsupplyjournal.com/3-4-inch-xxs-pipe.html  
Publisher: Piping Supply Journal (Piping Supply Journal Editorial Team) · Published 2026-11-03 · Updated 2026-11-04

3/4 inch XXS pipe (DN 20) — dimensions, weight and capacity per ASME B36.19M.

Nominal size| 3/4" (DN 20)  
---|---  
Schedule| XXS  
Outside diameter| 26.7 mm (1.051 in)  
Wall thickness| 7.82 mm (0.308 in)  
Inside diameter| 11.06 mm (0.435 in)  
Weight — carbon steel| 3.64 kg/m · 2.45 lb/ft  
Weight — SS 304 / SS 316| 3.68 / 3.70 kg/m  
6 m length (CS)| 21.8 kg  
20 ft length (CS)| 22.2 kg  
Flow area| 0.96 cm²  
Water capacity| 0.096 L/m  
Outer surface (painting)| 0.0839 m²/m  
Approx. max. working pressure*| 741 bar (10,754 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 3/4": [Sch 10S](https://pipingsupplyjournal.com/3-4-inch-schedule-10s-pipe.html) · [Sch 40](https://pipingsupplyjournal.com/3-4-inch-schedule-40-pipe.html) · [Sch 80](https://pipingsupplyjournal.com/3-4-inch-schedule-80-pipe.html) · [Sch 160](https://pipingsupplyjournal.com/3-4-inch-schedule-160-pipe.html) · [all 3/4" schedules](https://pipingsupplyjournal.com/3-4-inch-pipe-dimensions.html)

## Frequently asked questions

What is the ID of 3/4 inch XXS pipe?

11.06 mm (0.435 in), with OD 26.7 mm and wall 7.82 mm.

What is the weight of 3/4 inch XXS pipe?

3.64 kg/m (2.45 lb/ft) in carbon steel; 21.8 kg per 6 m length.

What pressure can 3/4 inch XXS pipe take?

Roughly 741 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