1. Pressure resistance: How much pressure can bellows withstand under the action of mechanical force. This requires bellows to have high-pressure resistance to ensure safe use.
2. Flow conductivity: The flow conductivity of the inner diameter of the bellows directly determines the application range and performance of the bellows. Therefore, it is very important for the bellows to have good flow conductivity.
3. Fatigue resistance: Whether the bellows can maintain good elasticity and shape under long-term continuous use and are not easily damaged is the fatigue resistance of the bellows.
4. Sealing performance: During the use of bellows, the bellows must be able to maintain sealing performance to prevent leakage and pollution.
5. Corrosion resistance: The bellows must also have a certain corrosion resistance during use for long-term use.

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