Beijing, China
| DIAMETER | Stiff-SN2500 | SN5000 | SN10000 | |||||||
| Pressure MPa | MPa | MPa | ||||||||
| 0.2 | 0.6 | 1.0 | 0.2 | 0.6 | 1.0 | 0.2 | 0.6 | 1.0 | 1.6 | |
| 125 | 5.3 | 5.9 | 5.3 | 5.9 | 5.9 | |||||
| 150 | 5.3 | 5.9 | 5.3 | 5.9 | 5.9 | |||||
| 200 | 5.3 | 6.2 | 6.2 | 6.2 | 6.2 | |||||
| 250 | 5.3 | 7.2 | 6.2 | 7.2 | 7.2 | |||||
| 300 | 5.3 | 7.2 | 7.2 | 7.2 | 7.2 | |||||
| 350 | 5.3 | 7.6 | 8.2 | 8.2 | 7.6 | |||||
| 400 | 5.3 | 7.6 | 8.5 | 8.2 | 7.6 | |||||
| 500 | 7.1 | 7.2 | 7.0 | 8.8 | 9.0 | 8.6 | 11.1 | 11.3 | 10.6 | 9.2 |
| 600 | 8.4 | 8.6 | 8.3 | 10.5 | 10.8 | 10.0 | 13.4 | 13.4 | 12.4 | 11.9 |
| 700 | 9.8 | 9.6 | 8.3 | 12.3 | 11.9 | 11.5 | 15.5 | 15.1 | 14.2 | 13.4 |
| 800 | 11.2 | 10.7 | 9.8 | 14.0 | 13.3 | 12.9 | 17.8 | 16.8 | 16.1 | 14.9 |
| 900 | 12.5 | 11.9 | 10.8 | 15.8 | 15.5 | 14.2 | 20.0 | 19.0 | 17.8 | 16.7 |
| 1000 | 13.9 | 13.2 | 12.3 | 17.5 | 16.6 | 15.8 | 22.2 | 21.2 | 19.7 | 18.2 |
| 1100 | 15.4 | 14.5 | 13.6 | 19.3 | 18.3 | 17.2 | 24.6 | 23.4 | 21.7 | 20.8 |
| 1200 | 16.6 | 15.5 | 14.5 | 21.0 | 19.6 | 18.6 | 26.8 | 25.0 | 23.3 | 21.8 |
| 1300 | 18.1 | 16.7 | 15.6 | 22.9 | 21.5 | 20.0 | 29.2 | 26.9 | 25.5 | 23.6 |
| 1400 | 19.5 | 17.7 | 15.4 | 24.6 | 22.4 | 21.5 | 31.2 | 28.6 | 27.0 | 25.5 |
| 1500 | 20.7 | 19.0 | 17.7 | 26.1 | 24.4 | 23.5 | 33.3 | 30.4 | 29.6 | 27.1 |
| 1600 | 21.8 | 20.5 | 19.2 | 27.8 | 26.0 | 24.5 | 35.4 | 33.3 | 31.0 | 28.9 |
| 1800 | 24.6 | 22.6 | 20.4 | 31.3 | 28.8 | 26.8 | 39.9 | 34.9 | 34.1 | 31.3 |
| 2000 | 27.4 | 25.4 | 23.4 | 35.0 | 32.4 | 29.6 | 44.7 | 38.2 | 37.3 | 36.1 |
| 2200 | 29.7 | 27.6 | 25.3 | 37.8 | 35.3 | 32.6 | 48.7 | 42.5 | 41.5 | 40.4 |
| 2400 | 32.6 | 30.3 | 28.4 | 41.8 | 38.8 | 34.6 | 53.4 | 45.8 | 44.6 | 42.8 |
| 2600 | 36.3 | 33.5 | 31.5 | 45.2 | 37.5 | 35.4 | 55.8 | 48.9 | 47.2 | 45.6 |
| 2800 | 39.3 | 36.0 | 34.0 | 49.4 | 45.1 | 42.0 | 62.0 | 56.5 | 53.0 | 51.0 |
| 3000 | 41.0 | 38.1 | 36.2 | 52.0 | 47.0 | 45.3 | 67.0 | 61.7 | 58.2 | 54.0 |
| 3200 | 47.1 | 41.4 | 39.5 | 56.6 | 49.2 | 46.3 | 69.9 | 62.9 | 59.4 | -- |
| 3400 | 50.0 | 43.7 | 41.6 | 59.9 | 52.0 | 49.3 | 74.2 | 64.2 | 60.6 | -- |
| 3600 | 52.5 | 46.2 | 44.2 | 62.7 | 55.1 | 52.0 | 77.6 | 68.5 | 63.9 | -- |
| 3800 | 55.5 | 48.6 | 46.3 | 66.6 | 57.8 | 54.5 | 82.5 | 71.9 | 67.0 | -- |
| 4000 | 58.3 | 50.9 | 48.6 | 69.8 | 61.0 | 57.6 | 86.3 | 75.5 | 71.0 | -- |