| 表E-4 Class900法兰的近似质量 | (kg) | |||||
| 公称尺寸 | 带颈平焊 SO | 带颈对焊 WN | 长高颈 LWN | 承插焊 SW | 法兰盖 BL | |
| DN | NPS | |||||
| 15 | 1/2 | 2.72 | 3.18 | 3.23 | 2.72 | 1.82 |
| 20 | 3/4 | 2.72 | 3.18 | 4.18 | 2.72 | 2.72 |
| 25 | 1 | 3.41 | 3.86 | 5.84 | 3.41 | 4.09 |
| 32 | 1 1/4 | 4.54 | 4.54 | 7.44 | 4.54 | 4.54 |
| 40 | 1 1/2 | 6.36 | 6.36 | 9.32 | 6.36 | 6.36 |
| 50 | 2 | 9.99 | 10.90 | 18.87 | 9.99 | 11.35 |
| 65 | 2 1/2 | 16.34 | 16.34 | 25.21 | 16.34 | 15.89 |
| 80 | 3 | 14.07 | 13.17 | 23.04 | 14.07 | 14.53 |
| 100 | 4 | 24.06 | 23.15 | 35.27 | — | 24.52 |
| 125 | 5 | 37.68 | 39.04 | 61.73 | — | 39.50 |
| 150 | 6 | 49.03 | 49.94 | 85.73 | — | 51.30 |
| 200 | 8 | 78.09 | 84.90 | 134.50 | — | 89.44 |
| 250 | 10 | 111.23 | 121.67 | 200.33 | — | 131.66 |
| 300 | 12 | 148.00 | 168.89 | 238.88 | — | 187.50 |
| 350 | 14 | 172.52 | 255.15 | 264.47 | — | 224.28 |
| 400 | 16 | 208.39 | 310.99 | 322.12 | 一 | 281.03 |
| 450 | 18 | 293.74 | 419.50 | 409.98 | — | 399.52 |
| 500 | 20 | 359.57 | 528.46 | 491.86 | — | 502.58 |
| 600 | 24 | 671.92 | 956.58 | 802.80 | — | 952.95 |