Metal corrugated hoses often achieve good results when used for compensation and vibration isolation and noise reduction in actual projects. It is more and more widely used in engineering. However, some problems have also occurred. The root cause of these problems is mainly due to improper selection or installation.
The so-called selection is the diameter, connection method, working pressure, temperature correction, minimum bending radius, and the length of the metal hose must be selected appropriately, otherwise it may cause the early failure of the metal hose and cause a major personal equipment accident. The pressure specified in the model is the design pressure of the product. It cannot be less than the working pressure, but it should not be too high. Otherwise, although the pressure-bearing capacity of the hose is improved, the bending life will be greatly reduced. According to the analysis of many failures in the past, it is mostly due to fatigue Due to insufficient pressure-bearing capacity, there are very few.
The load conditions and installation of the metal corrugated hose in use is a matter that must be paid attention to.

The parameter of the minimum bending radius of the bellows is particularly critical in engineering applications, and it directly affects the service life of the hose. The working conditions in practical applications are diverse, and the conditions of use are also very complicated. Therefore, it is very difficult to give a highly versatile and accurate design bending radius through theoretical calculation methods.
The metal corrugated hose is made of chromium-nickel austenitic stainless steel, pay attention to:
1. Prevent the pitting corrosion of nitrogen ions and the corrosive damage of dilute sulfuric acid and dilute nitric acid.
2. After the water pressure test is carried out on the equipment and piping system installed with metal, the impact of rust blocks and the deposition of chloride ion-containing sediment shall be prevented, which may cause corrosion and mechanical damage.
3. In the installation, the metal hose bellows should be protected from splashes and mechanical damage during welding, otherwise it will cause leakage.
4. The airtight piping system should strictly abide by the safety operation regulations to prevent the hose from pulling off or bursting due to overpressure caused by improper operation or other factors.
5. Install and use in strict accordance with the correct method.