Recently, many friends asked me how to check the air tightness of stainless steel hose after buying it. Today we will talk about this problem.

First of all, we know that stainless steel bellows, as a pipe connection, has many advantages such as light weight, corrosion resistance, high temperature, vibration absorption, etc. Production enterprises pay more attention to product structure and production cost. With the stable operation and reliability of products.

Whether it is reasonable or not has long-term significance. How to ensure the normal and orderly development of stainless steel bellows depends on the reliability of reasonable product design and inspection.

Secondly, what we need to know is that there are generally seven items in the inspection process, including appearance, size, pressure resistance, air tightness, yield degree, etc. Among them, the air tightness test is a necessary step before leaving the factory, and the others are carried out selectively according to the customer's requirements.

Finally, we should pay attention to the details. Pressure resistance test of stainless steel bellows is a safety index. During the pressure test, add 1.5 times of pressure to it. The medium used for the experiment can be water or air. If the chloride ion content in water is lower than 25, it should be carried out for every stainless steel bellows. Electric or manual pressurization can be used, usually 1.5 times the design pressure. During the experiment, the bellows was laid flat, one end of the bellows was connected with a pipe to inject water into the pipe, then the pressure was slowly increased, and the pressure was maintained for 5 minutes to see if there was any leakage. It was essential to ensure that there was no leakage.

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