| Size | D | Tolerance | t（min） | D1 | |
| 1/2" | 21.34 | ±0.10 | 3.73 | 13.84 | |
| 3/4" | 26.67 | ±0.10 | 3.91 | 18.88 | |
| 1" | 33.40 | ±0.13 | 4.55 | 24.30 | |
| 1-1/4" | 42.16 | ±0.13 | 4.85 | 32.50 | |
| 1-1/2" | 48.26 | ±0.15 | 5.08 | 38.14 | |
| 2" | 60.33 | ±0.15 | 5.54 | 49.22 | |
| 2-1/2" | 73.03 | ±0.18 | 7.01 | 58.98 | |
| 3" | 88.90 | ±0.20 | 7.62 | 73.66 | |
| 4" | 114.30 | ±0.23 | 8.56 | 97.18 | |
| 5" | 141.30 | ±0.25 | 9.52 | 122.26 | |
| 6" | 168.28 | ±0.28 | 10.97 | ±1.32 | 146.34 |
| 8" | 219.08 | ±0.38 | 12.70 | ±1.52 | 193.68 |
| 10" | 273.05 | ±0.38 | 15.06 | ±1.80 | 242.98 |
| 12" | 323.85 | ±0.38 | 17.45 | ±2.08 | 289.00 |
| 14" | 355.60 | ±0.38 | 19.05 | ±2.29 | 317.50 |
| 16" | 406.40 | ±0.48 | 21.41 | ±2.57 | 363.58 |
| 18" | 457.20 | ±0.48 | 23.80 | ±2.84 | 409.60 |
| 20" | 508.00 | ±0.58 | 26.19 | ±3.15 | 455.62 |
| 24" | 609.60 | ±0.79 | 30.94 | ±3.17 | 547.72 |
