1.Forming method: Hydraulic forming
2.shape: U
3 operating temperature : -60 ℃ -+100℃
4 application : instrument . Thermometer bellows coupling bellows fuel level gauge valve copper bellows no sealing high pressure bellows vacuum bellows sensor bellows vacuum switch
5 types of joints : 1, both ends are external joints WW type
2, both ends are internal joints NN type
3, one end is external joints , the other with bottom WDtype
4, both ends are side cut from the trough QdQd type
| effective area cm2 | OD(MM) | ID(MM) | pitch(mm) thickness | waves | thickness(mm) |
| 0.52 | 10 | 6.2 | 1 | 12 | 0.12 |
| 0.75 | 12 | 7.5 | 1.2 | 12 | 0.12 |
| 1.11 | 15 | 8.8 | 1.8 | 12 | 0.12 |
| 1.18 | 15 | 9.5 | 1.8 | 12 | 0.10-0.12 |
| 1.71 | 18 | 11.5 | 1.6 | 13 | 0.12 |
| 2.07 | 20 | 12.5 | 2.1 | 12 | 0.10-0.12 |
| 2.54 | 22 | 14 | 2.2 | 14 | 0.10-0.12 |
| 3.38 | 25 | 16.5 | 2.3 | 12 | 0.10-0.12 |
| 4.15 | 28 | 18 | 2.6 | 12 | 0.10-0.12 |
| 5.01 | 31 | 19.5 | 1.6 | 12 | 0.10-0.12 |
| 5.62 | 32 | 21.5 | 3 | 12 | 0.10-0.12 |
| 7.55 | 37 | 25 | 3 | 9 | 0.10-0.12 |
| 7.92 | 38 | 25.5 | 3.2 | 12 | 0.12-0.14 |
| 8.95 | 40 | 27.5 | 3.4 | 12 | 0.12-0.14 |
