| 工作温度（℃） | 最大允许工作压力（bar） | |||||
| Class150 (PN20) | Class300 (PN50) | Class600 (PN110) | Class900 (PN150) | Class1500 (PN260) | Class2500 (PN420) | |
| ≤38 | 18.4 | 48.0 | 96.0 | 144.1 | 240.1 | 400.1 |
| 50 | 18.2 | 47.5 | 94.9 | 142.4 | 237.3 | 395.6 |
| 100 | 17.4 | 45.3 | 90.7 | 136.0 | 226.7 | 377.8 |
| 150 | 15.8 | 43.9 | 87.9 | 131.8 | 219.7 | 366.1 |
| 200 | 13.8 | 42.5 | 85.1 | 127.6 | 212.7 | 354.4 |
| 250 | 12.1 | 40.8 | 81.6 | 122.3 | 203.9 | 339.8 |
| 300 | 10.2 | 38.7 | 77.4 | 116.1 | 193.4 | 322.4 |
| 325 | 9.3 | 37.6 | 75.2 | 112.7 | 187.9 | 313.1 |
| 350 | 8.4 | 36.4 | 72.8 | 109.2 | 182.0 | 303.3 |
| 375 | 7.4 | 35.0 | 69.9 | 104.9 | 174.9 | 291.4 |
| 400 | 6.5 | 32.6 | 65.2 | 97.9 | 163.1 | 271.9 |
| 425 | 5.5 | 27.3 | 54.6 | 81.9 | 136.5 | 227.5 |
| 450 | 4.6 | 21.6 | 43.2 | 64.8 | 107.9 | 179.9 |
| 475 | 3.7 | 15.7 | 31.3 | 47.0 | 78.3 | 130.6 |
| 500 | 2.8 | 11.1 | 72.1 | 33.2 | 55.4 | 92.3 |
| 538 | 1.4 | 5.9 | 11.8 | 17.7 | 29.5 | 49.2 |