3/4 inch XXS pipe dimensions & weight
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 for your own design conditions.
Other schedules for 3/4": Sch 10S · Sch 40 · Sch 80 · Sch 160 · all 3/4" schedules
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.
By Piping Supply Journal Editorial Team · Published · Last updated