20 RW
What is the nominal o.d. (mm) for 20 RW?
For 20 RW, nominal o.d. (mm) is 0.91; nominal i.d. (mm) is 0.61; wall thickness (mm) is .152, verified against its source on 2026-08-27.
20 RW 0.91 0.90/0.91 .152 0.61 0.58/0.62
— nesmalltube.com, retrieved 2026-08-27
- Gauge number
- 20 RW verified
- Nominal O.D. (mm)
- 0.91 verified
- Nominal I.D. (mm)
- 0.61 verified
- Wall thickness (mm)
- .152 verified
Source
- nesmalltube.comhttps://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf