JIS G 3452より一部引用
| サイズ | 外径 (mm) | 厚さ (mm) | 単位質量 (kg/m) |
|---|---|---|---|
| 6A (1/8B) | 10.5 | 2 | 0.419 |
| 8A (1/4B) | 13.8 | 2.3 | 0.652 |
| 10A (3/8B) | 17.3 | 2.3 | 0.851 |
| 15A (1/2B) | 21.7 | 2.8 | 1.31 |
| 20A (3/4B) | 27.2 | 2.8 | 1.68 |
| 25A (1B) | 34 | 3.2 | 2.43 |
| 32A (1 1/4B) | 42.7 | 3.5 | 3.38 |
| 40A (1 1/2B) | 48.6 | 3.5 | 3.89 |
| 50A (2B) | 60.5 | 3.8 | 5.31 |
| 65A (2 1/2B) | 76.3 | 4.2 | 7.47 |
| 80A (3B) | 89.1 | 4.2 | 8.79 |
| 90A (3 1/2B) | 101.6 | 4.2 | 10.1 |
| 100A (4B) | 114.3 | 4.5 | 12.2 |
| 125A (5B) | 139.8 | 4.5 | 15 |
| 150A (6B) | 165.2 | 5 | 19.8 |
| 175A (7B) | 190.7 | 5.3 | 24.2 |
| 200A (8B) | 216.3 | 5.8 | 30.1 |
| 225A (9B) | 241.8 | 6.2 | 36 |
| 250A (10B) | 267.4 | 6.6 | 42.4 |
| 300A (12B) | 318.5 | 6.9 | 53 |
| 350A (14B) | 355.6 | 7.9 | 67.7 |
| 400A (16B) | 406.4 | 7.9 | 77.6 |
| 450A (18B) | 457.2 | 7.9 | 87.5 |
| 500A (20B) | 508 | 7.9 | 97.4 |