What exactly is the use of flexible pipe？

I believe that many people have heard of flexible pipes, but do you know what it is actually used for?

It is installed in the exhaust pipe between the engine exhaust manifold and the muffler, so that the whole exhaust system is flexibly connected, thus playing the role of vibration and noise reduction, convenient installation and extending the life of the exhaust muffler system, which is one of the indispensable and important parts of the car.

The structure of the flexible pipe is mainly the inner and outer braided mesh. Usually the outer braid has two layers, made of stainless steel 304 or other materials, which can ensure the long-term durability and functionality of the bellows, and the right amount of waves can also ensure the flexibility and durability of the bellows. The inner braided layer has a one-way fastening, which is used to prevent potential deformation.

Based on this special structure, our common flexible pipes can be broadly classified into four structural types as follows.

1. Three-layer flexible pipe: with outer braid, without inner braid, all collectively called three-layer flexible pipe.

2. With inner and outer braid.

3. With outer braid, inner interlock.

4. With inner braid, outer wire.

flexible pipes can be similarly classified according to material.

1. Stainless steel 201 flexible pipe: 201 flexible pipe with flared mouth is generally aluminized or 409.

2. Stainless steel 304 flexible pipe: 304 flexible pipe flare is generally 409 or 201.

Many people will find that the flexible pipe internal cracking situation, which is actually caused by the thickness is not enough. Because for the four layers of the inner and outer braid of the bellows, and the outer braid of the flexible pipe inside the expansion joint, if the thickness of the middle layer reaches a certain value, the bellows will become a three-layer structure. If the thickness of the middle layer does not reach a certain value, the bellows will be prone to fracture.

In addition, we mentioned above the number of waves of flexible pipe, here to emphasize that the more the number of waves of flexible pipe, the stronger the flexibility of flexible pipe. This is an important criterion to identify the superiority and inferiority of the product.

In summary, the flexible pipe has a diverse range of structural types and material classifications, you can choose according to your needs and preferences, but it is worth noting that you must buy products with quality assurance, so as to avoid or reduce the problems that may arise in the use of flexible pipe.