ASME B16.9 — Butt-weld elbows, tees, reducers & caps
ASME B16.9 Butt-weld elbows, tees, reducers & caps — 27 sizes.
| NPS | OD at bevel (mm) | 90° LR (A) (mm) | 45° LR (B) (mm) | 90° SR (A) (mm) | Tee C-to-E (C/M) (mm) | Reducer (H) (mm) | Cap (E) (mm) | 3D bend R (mm) | 5D bend R (mm) |
|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 21.3 | 38 | 16 | — | 25 | — | 25 | 38 | 64 |
| 3/4 | 26.7 | 38 | 19 | — | 29 | 38 | 25 | 57 | 95 |
| 1 | 33.4 | 38 | 22 | 25 | 38 | 51 | 38 | 76 | 127 |
| 1-1/4 | 42.2 | 48 | 25 | 32 | 48 | 51 | 38 | 95 | 159 |
| 1-1/2 | 48.3 | 57 | 29 | 38 | 57 | 64 | 38 | 114 | 191 |
| 2 | 60.3 | 76 | 35 | 51 | 64 | 76 | 38 | 152 | 254 |
| 2-1/2 | 73 | 95 | 44 | 64 | 76 | 89 | 38 | 191 | 318 |
| 3 | 88.9 | 114 | 51 | 76 | 86 | 89 | 51 | 229 | 381 |
| 3-1/2 | 101.6 | 133 | 57 | 89 | 95 | 102 | 64 | 267 | 445 |
| 4 | 114.3 | 152 | 64 | 102 | 105 | 102 | 64 | 305 | 508 |
| 5 | 141.3 | 190 | 79 | 127 | 124 | 127 | 76 | 381 | 635 |
| 6 | 168.3 | 229 | 95 | 152 | 143 | 140 | 89 | 457 | 762 |
| 8 | 219.1 | 305 | 127 | 203 | 178 | 152 | 102 | 610 | 1016 |
| 10 | 273.1 | 381 | 159 | 254 | 216 | 178 | 127 | 762 | 1270 |
| 12 | 323.9 | 457 | 190 | 305 | 254 | 203 | 152 | 914 | 1524 |
| 14 | 355.6 | 533 | 222 | 356 | 279 | 330 | 165 | 1067 | 1778 |
| 16 | 406.4 | 610 | 254 | 406 | 305 | 356 | 178 | 1219 | 2032 |
| 18 | 457 | 686 | 286 | 457 | 343 | 381 | 203 | 1372 | 2286 |
| 20 | 508 | 762 | 318 | 508 | 381 | 508 | 229 | 1524 | 2540 |
| 22 | 559 | 838 | 343 | 559 | 419 | 508 | 254 | 1676 | 2794 |
| 24 | 610 | 914 | 381 | 610 | 432 | 508 | 267 | 1829 | 3048 |
| 26 | 660 | 991 | 406 | 660 | 495 | 610 | 267 | 1981 | 3302 |
| 28 | 711 | 1067 | 438 | 711 | 521 | 610 | 267 | 2134 | 3556 |
| 30 | 762 | 1143 | 470 | 762 | 559 | 610 | 267 | 2286 | 3810 |
| 32 | 813 | 1219 | 502 | 813 | 597 | 610 | 267 | 2438 | 4064 |
| 34 | 864 | 1295 | 533 | 864 | 635 | 610 | 267 | 2591 | 4318 |
| 36 | 914 | 1372 | 565 | 914 | 673 | 610 | 267 | 2743 | 4572 |
- LR = long radius (R = 1.5 × NPS), SR = short radius (R = 1.0 × NPS).
- Cross dimensions equal tee C.
- 3D / 5D bend radii are nominal (3 × NPS, 5 × NPS) as used for induction bends.
- Cap E applies to standard wall; heavier walls can have a longer E1.