XB圆形风道纤维织物膨胀节安装要求：
| 圆形产品 | Dw | D1 | D2 | D3 | b | n | Φd |
| 规格 | mm | ||||||
| Φ108 | 108 | 200 | 164 | 110 | 10 | 4 | 10 |
| Φ159 | 159 | 251 | 215 | 161 | 8 | ||
| Φ219 | 219 | 311 | 275 | 211 | |||
| Φ273 | 273 | 365 | 330 | 275 | 12 | ||
| Φ325 | 325 | 427 | 385 | 327 | |||
| Φ377 | 377 | 479 | 435 | 379 | 12 | ||
| Φ426 | 426 | 528 | 490 | 428 | |||
| Φ480 | 480 | 595 | 540 | 483 | 12 | ||
| Φ530 | 530 | 645 | 600 | 533 | |||
| Φ630 | 630 | 745 | 700 | 633 | 16 | ||
| Φ720 | 720 | 843 | 800 | 723 | |||
| Φ820 | 820 | 943 | 900 | 823 | 20 | 14 | |
| Φ920 | 920 | 1043 | 1000 | 923 | |||
| Φ1020 | 1020 | 1153 | 1100 | 1023 | 14 | ||
| Φ1120 | 1120 | 1253 | 1200 | 1123 | |||
| Φ1220 | 1220 | 1353 | 1300 | 1223 | |||
| Φ1320 | 1320 | 1453 | 1400 | 1323 | 24 | ||
| Φ1420 | 1420 | 1553 | 1500 | 1423 | 16 | 28 | |
| Φ1820 | 1820 | 1963 | 1910 | 1823 | 16 | ||
| Φ2020 | 2220 | 2363 | 2310 | 2223 | 32 | ||
| Φ2220 | 2220 | 2363 | 2310 | 2223 | 18 | 36 | |
| Φ2420 | 2420 | 2563 | 2510 | 2423 | 40 | ||
| Φ2820 | 2820 | 2983 | 2915 | 2823 | 20 | 44 | 18 |
| Φ3220 | 3220 | 3883 | 3315 | 3223 | 22 | 52 | |
| Φ3620 | 3620 | 3783 | 3715 | 3623 | 56 | ||
