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Automotive exhaust pipe is an important connector in the automotive field. It is installed in the exhaust pipe between the engine exhaust branch pipe and the muffler, making the connection of the entire exhaust system flexible and reducing noise.It is easy to install and extend the life of the exhaust noise reduction system.Using its own unique air tightness, double-layer hydraulic pressure,water are used as the medium during molding, and the bellows made is more conducive to the emission of automobile exhaust, and the pollution of engine exhaust to the environment is minimized.

It is used to absorb vibration of the exhaust system and prevent excessive thermal deformation for a comfortable ride. Stainless steel SUS304, as the main material of flexible joints, is resistant to high temperature and salt corrosion. Bellows can be equipped with mesh sleeves and expansion joints to eliminate engine noise.

Therefore, automotive flexible joints (automobile exhaust pipe bellows) have become the most ideal compensation components in modern industrial supporting pipelines.

Exhaust hoses are mainly used in light trucks, minibuses and passenger cars. The structure is a double-layer corrugated pipe sleeve with a steel mesh sleeve, and the two ends are a straight edge section outer snap ring structure. In order to improve the noise reduction effect, expansion joints or mesh sleeves can be installed in the bellows.

Automakers are now working to improve the performance of car engines. In order to meet the new exhaust emission standards and reduce the pollution of exhaust to the environment. This requires the exhaust system to work properly under high temperature, extreme corrosive conditions.

The main functions of the automobile exhaust hose are: to achieve a sealed and flexible connection between the engine and the exhaust system; to absorb the rocking displacement of the engine; to limit the engine's transmission of high-frequency vibration to the subsequent exhaust system.

When designing and manufacturing the exhaust hose, it is necessary to consider the position of the ternary converter, filter and muffler at the same time to ensure the continuous and good operation of the exhaust system.

Therefore, the exhaust hose must have corrosion resistance and good pressure resistance, which can effectively compensate for the displacement generated when the engine is working, eliminate the high-frequency vibration of the engine and the low-frequency vibration caused by uneven road surfaces, and transport the exhaust gas to 1000 ° C. Airflow noise.

A good exhaust hose can significantly improve the exhaust system, the NVH performance of the vehicle, and continuously improve passenger comfort.

Relying on Yueding's professional engineers and more than 20 years of manufacturing experience, the products can fully meet the demanding requirements of users.

If you ask if an exhaust need a flex pipe or what is the flex pipe, we will answer you that and exhaust flex pipe is in the place where the exhaust manifold meets the downpipe or mid-section of an exhaust, which is very closer to the engine than to the exit tailpipe, you can easily find it by your eyesight. The Flex Pipes can minimize the shaking and vibration during working, and it impacts on the vehicle exhaust system, generally speaking, Aside from connecting the engine and exhaust system and transporting exhaust gases they are made to support and protect the exhaust system by absorbing most of the vibrations and noise. Flexible pipes also help to limit or decrease the cracks,that may appear in the exhaust system, avoid damaging other parts. By keeping the exhaust system from shaking too much, so the pipe helps other exhaust parts last longer.  

Higher quality flex pipes are made of stainless steel, stainless steel 304 and Stainless steel 201 are the most popular material, and it gives the exhaust line enough flexibility during the movement. Moreover, there are 3 different inside structures, base item, inner braid item and interlock item. Different structures are widely used in different markets. Based on different material and market, the average temperature of an exhaust pipe is between 450 and 600 degrees. And, also depending on how long you are driving, which means the temperature can be as low as 300 degrees or as high as 800 degrees during working. The heat from the engine is removed by the exhaust system and muffler.

Exhaust flexible shall be flexibility, and remember never replace a flex pipe with a solid or straight pipe. A straight pipe will only damage both parts. When it is flexible, it can reduce the vibration, while a solid pipe do not have this function. If there is a problem with your exhaust, it will soon begin to affect the performance of your whole engine. You will not be able to accelerate as well or as quickly, and you won't even get the same power when you do accelerate. This problem will continue to be worse if you do not pay attention to it. So, when you hear some special sound or when you feel the car in a bad situation of shaking, you have to take a look to the garage, and better to change for a new exhaust flexible pipe.

        

Zhejiang Yueding Corrugated Tube Co., Ltd. (formerly Zhejiang Yueqing Metal Hose Factory), was established in 1992 with a registered capital of USD1, 250, 000. We are a manufacturer of all kinds of exhaust flexible pipes, metal hoses, and corrugated compensators. Presently, we have over 200 employees, including 30 skilled engineers and highly-trained technicians.Company facilities occupy an area of approximately 11,720 square meters and current annual production is valued at more than USD6,000,000. Main export markets include such countries and regions as Europe, America, East Asia, Southeast Asia, the Middle East and Russia. Working with advanced manufacturing equipment, we are able to effectively control the quality of our products. We are one of the best OEM exhaust system factories in China, are ISO9001 certified, and manufacture according to PICC stipulations. Today, our products are widely used in such industries as auto parts, petroleum, electric power, chemicals, and medicine.We are continually exploring opportunities to engage with like-minded companies seeking to establish mutually beneficial and strategic long-term working relationships.

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Overview. PASS/START-PROF provides comprehensive pipe stress, flexibility, stability, and fatigue strength analysis with related sizing calculations according to international and national codes and standards.First introduced in 1965, PASS/START-PROF combines a highly efficient solver, powerful analysis features, a user friendly GUI, an intuitive 3D graphical pre/post …