1. Pipe OD & Wall Thickness (ASME B36.10M)
Butt-weld fittings share the OD and wall thickness of the matching pipe. Note: above NPS 10, STD (9.53 mm) no longer equals SCH40 and XS (12.70 mm) no longer equals SCH80 — always confirm the schedule number.
| NPS | DN | OD (mm) | SCH40 WT (mm) | SCH80 WT (mm) |
|---|---|---|---|---|
| 1/2" | DN15 | 21.3 | 2.77 | 3.73 |
| 3/4" | DN20 | 26.7 | 2.87 | 3.91 |
| 1" | DN25 | 33.4 | 3.38 | 4.55 |
| 1-1/2" | DN40 | 48.3 | 3.68 | 5.08 |
| 2" | DN50 | 60.3 | 3.91 | 5.54 |
| 3" | DN80 | 88.9 | 5.49 | 7.62 |
| 4" | DN100 | 114.3 | 6.02 | 8.56 |
| 6" | DN150 | 168.3 | 7.11 | 10.97 |
| 8" | DN200 | 219.1 | 8.18 | 12.70 |
| 10" | DN250 | 273.0 | 9.27 | 15.09 |
| 12" | DN300 | 323.8 | 10.31 | 17.48 |
| 14" | DN350 | 355.6 | 11.13 | 19.05 |
| 16" | DN400 | 406.4 | 12.70 | 21.44 |
| 18" | DN450 | 457.2 | 14.27 | 23.83 |
| 20" | DN500 | 508.0 | 15.09 | 26.19 |
| 24" | DN600 | 610.0 | 17.48 | 30.96 |
2. 90° Elbow Center-to-Face (ASME B16.9)
Long radius (LR): A = 1.5 × nominal size. Short radius (SR): A = 1 × nominal size.
| NPS | OD (mm) | LR "A" (mm) | SR "A" (mm) |
|---|---|---|---|
| 1" | 33.4 | 38 | 25 |
| 1-1/2" | 48.3 | 57 | 38 |
| 2" | 60.3 | 76 | 51 |
| 3" | 88.9 | 114 | 76 |
| 4" | 114.3 | 152 | 102 |
| 6" | 168.3 | 229 | 152 |
| 8" | 219.1 | 305 | 203 |
| 10" | 273.0 | 381 | 254 |
| 12" | 323.8 | 457 | 305 |
| 14" | 355.6 | 533 | 356 |
| 16" | 406.4 | 610 | 406 |
| 18" | 457.2 | 686 | 457 |
| 20" | 508.0 | 762 | 508 |
| 24" | 610.0 | 914 | 610 |
3. 45° LR Elbow Center-to-Face (ASME B16.9)
| NPS | OD (mm) | "B" (mm) |
|---|---|---|
| 2" | 60.3 | 35 |
| 3" | 88.9 | 50 |
| 4" | 114.3 | 64 |
| 6" | 168.3 | 95 |
| 8" | 219.1 | 127 |
| 10" | 273.0 | 159 |
| 12" | 323.8 | 190 |
| 16" | 406.4 | 254 |
| 20" | 508.0 | 318 |
| 24" | 610.0 | 381 |
Reference data compiled from ASME B36.10M and ASME B16.9 standard dimensions. Always verify critical dimensions against the latest edition of the applicable standard or your project specification. Need a size not listed here, or tee / reducer / cap dimensions? Ask us — we reply within 24 hours.