Technical information / Pipe and actuator connection / ASME B36.19
Pipe dimension standard
ASME B36.19
Stainless steel pipe dimensions
Schedules with the "S" suffix are specific to stainless pipe. For a given NPS the outside diameter is constant; a higher schedule means a thicker wall and a smaller bore.
| NPS | DN | Outside dia.D | Sch 5St · kg/m | Sch 10St · kg/m | Sch 40St · kg/m | Sch 80St · kg/m |
|---|---|---|---|---|---|---|
| 1/8" | DN6 | 10.29 | — | 1.240.28 | 1.730.37 | 2.410.47 |
| 1/4" | DN8 | 13.72 | — | 1.650.50 | 2.240.64 | 3.020.81 |
| 3/8" | DN10 | 17.15 | — | 1.650.64 | 2.310.85 | 3.201.11 |
| 1/2" | DN15 | 21.34 | 1.650.81 | 2.111.01 | 2.771.28 | 3.731.64 |
| 3/4" | DN20 | 26.67 | 1.651.03 | 2.111.29 | 2.871.70 | 3.912.22 |
| 1" | DN25 | 33.40 | 1.651.31 | 2.772.11 | 3.382.53 | 4.553.27 |
| 1 1/4" | DN32 | 42.16 | 1.651.67 | 2.772.72 | 3.563.42 | 4.854.51 |
| 1 1/2" | DN40 | 48.26 | 1.651.92 | 2.773.14 | 3.684.09 | 5.085.46 |
| 2" | DN50 | 60.33 | 1.652.41 | 2.773.97 | 3.915.50 | 5.547.56 |
| 2 1/2" | DN65 | 73.03 | 2.113.73 | 3.055.32 | 5.168.72 | 7.0111.53 |
| 3" | DN80 | 88.90 | 2.114.56 | 3.056.52 | 5.4911.41 | 7.6215.43 |
| 3 1/2" | DN90 | 101.60 | 2.115.23 | 3.057.49 | 5.7413.71 | 8.0818.83 |
| 4" | DN100 | 114.30 | 2.115.90 | 3.058.45 | 6.0216.24 | 8.5622.55 |
| 5" | DN125 | 141.30 | 2.779.56 | 3.4011.68 | 6.5521.99 | 9.5331.28 |
| 6" | DN150 | 168.28 | 2.7711.42 | 3.4013.97 | 7.1128.55 | 10.9742.99 |
| 8" | DN200 | 219.08 | 2.7714.93 | 3.7620.17 | 8.1842.98 | 12.7065.30 |
| 10" | DN250 | 273.05 | 3.4022.84 | 4.1928.06 | 9.2760.92 | 12.7082.37 |
| 12" | DN300 | 323.85 | 3.9631.56 | 4.5736.35 | 9.5374.63 | 12.7098.45 |
| 14" | DN350 | 355.60 | 3.9634.69 | 4.7841.78 | 9.5382.16 | 12.70108.49 |
| 16" | DN400 | 406.40 | 4.1941.98 | 4.7847.83 | 9.5394.22 | 12.70124.56 |
| 18" | DN450 | 457.20 | 4.1947.29 | 4.7853.88 | 9.53106.29 | 12.70140.64 |
| 20" | DN500 | 508.00 | 4.7859.93 | 5.5469.35 | 9.53118.35 | 12.70156.71 |
| 22" | DN550 | 558.80 | 4.7865.97 | 5.5476.36 | — | — |
| 24" | DN600 | 609.60 | 5.5483.37 | 6.3595.43 | 9.53142.47 | 12.70188.85 |
| 30" | DN750 | 762.00 | 6.35119.54 | 7.92148.79 | — | — |
Notes
- This table has been compiled by Emsal from the relevant standards. For the full text of the standard, refer to ASME.
- Every value is identical in at least two independent sources. Values found in only one source (NPS ⅛–⅜ Sch 5S, Sch 40S / 80S at NPS 22 and 30) have been omitted.
- NPS and DN: NPS is the nominal size in inches; from NPS 14 upwards the outside diameter equals NPS × 25.4 mm, but not for smaller sizes (e.g. a 2" pipe is 60.33 mm).
- Metric stainless pipe (ISO 1127) uses the same outside diameter for most sizes, but not all: 76.1 mm at DN65 (ASME 73.03), 139.7 mm at DN125 (ASME 141.3). Check which series is used when selecting fittings and valve ends.
- Weight is for plain-end pipe: kg/m = π · (D − t) · t · ρ / 1000. Add about 1% for AISI 316.
- Accuracy and currency are not guaranteed; use the current edition of the standard for design and purchasing decisions. How the library is compiled →
Related pages
| 1 | Velocity and pressure drop in the pipeline Pipeline sizing tool → |
| 2 | Flanges welded to the pipe ASME B16.5 weld neck flange → |
| 3 | Threaded pipe connections NPT pipe thread → |