ASME B16.9 Butt Weld Reducing Elbow
| NPS | LD(Large End) | SD(Small End) | A(Center to End) |
| 2×1 1/2 | 60.3 | 48.3 | 76 |
| 2×1 1/4 | 60.3 | 42.2 | 76 |
| 2×1 | 60.3 | 33.4 | 76 |
| 2 1/2×2 | 73 | 60.3 | 95 |
| 2 1/2×1 1/2 | 73 | 48.3 | 95 |
| 2 1/2×1 1/4 | 73 | 42.2 | 95 |
| 3×2 1/2 | 88.9 | 73 | 114 |
| 3×2 | 88.9 | 60.3 | 114 |
| 3×1 1/2 | 88.9 | 48.3 | 114 |
| 3 1/2×3 | 101.6 | 88.9 | 133 |
| 3 1/2×2 1/2 | 101.6 | 73 | 133 |
| 3 1/2×2 | 101.6 | 60.3 | 133 |
| 4×3 1/2 | 114.3 | 101.6 | 152 |
| 4×3 | 114.3 | 88.9 | 152 |
| 4×2 1/2 | 114.3 | 73 | 152 |
| 4×2 | 114.3 | 60.3 | 152 |
| 5×4 | 141.3 | 114.3 | 190 |
| 5×3 1/2 | 141.3 | 101.6 | 190 |
| 5×3 | 141.3 | 88.9 | 190 |
| 5×2 1/2 | 141.3 | 73 | 190 |
| 6×5 | 168.3 | 141.3 | 229 |
| 6×4 | 168.3 | 114.3 | 229 |
| 6×3 1/2 | 168.3 | 101.6 | 229 |
| 6×3 | 168.3 | 88.9 | 229 |
| 8×6 | 219.1 | 168.3 | 305 |
| 8×5 | 219.1 | 141.3 | 305 |
| 8×4 | 219.1 | 114.3 | 305 |
| 10×8 | 273 | 219.1 | 381 |
| 10×6 | 273 | 168.3 | 381 |
| 10×5 | 273 | 141.3 | 381 |
| 12×10 | 323.8 | 273 | 457 |
| 12×8 | 323.8 | 219.1 | 457 |
| 12×6 | 323.8 | 168.3 | 457 |
| 14×12 | 355.6 | 323.8 | 533 |
| 14×10 | 355.6 | 273 | 533 |
| 14×8 | 355.6 | 219.1 | 533 |
| 16×14 | 406.4 | 355.6 | 610 |
| 16×12 | 406.4 | 323.8 | 610 |
| 16×10 | 406.4 | 273 | 610 |
| 18×16 | 457 | 406.4 | 686 |
| 18×14 | 457 | 355.6 | 686 |
| 18×12 | 457 | 323.8 | 686 |
| 18×10 | 457 | 273 | 686 |
| 20×18 | 508 | 457 | 762 |
| 20×16 | 508 | 406.4 | 762 |
| 20×14 | 508 | 355.6 | 762 |
| 20×12 | 508 | 323.8 | 762 |
| 20×10 | 508 | 273 | 762 |
| 24×22 | 610 | 559 | 914 |
| 24×20 | 610 | 508 | 914 |
| 24×18 | 610 | 457 | 914 |
| 24×16 | 610 | 406.4 | 914 |
| 24×14 | 610 | 355.6 | 914 |
| 24×12 | 610 | 323.8 | 914 |