Metal Exhaust Flexible Pipe Bellows for Automobile Exhaust System

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Abides the principle “Customer foremost, Quality first, Process refined, Technology advanced”, Ningbo Connect Automobile Parts successfully got the certificate of TS16949, to be at forefront of the industry. Furthermore, Connect products have reached a leading position in domestic and international market, and OEM suppliers of homogeneous series products got to be finished automobile suppliers of GM, Toyota, Hyundai, Daewoo, etc.

Over 10 years experiences, Connecthas mainly engaged in sales and R&D of automobile intake/exhaust system products. There are: Automobile exhaust bellows (flexible hinge) exhaust pipe elbow, EGR cooler threaded pipe, hydraulic molding pipe fittings and automobile tail pipe, flange, etc.

Exhaust flexible pipe is a part of automobile exhaust system,which is located at the front section of TWC.It can reducce vibration of the exhaust pipe caused by operation of the engine,protect the exhaust pipe from breaking and falling off due to long-term vibration,increase service life of the exhaust pipe,and reduce noise of the exhaust system.It is mainly applied to the connection between engine and exhaust system of cars,heavy-duty vehicles(passenger car,bus),construction machinery.forklift and other special trucks.

1.)   Installed between engine and muffler;

2.)   Used to decrease engine noise and vibration;

3.)   Absorbs muffler pipe thermal expansion;

4.)   Compensates for exhaust converter misalignment;

5.)   Reduces air pollution;

6.)   Made of stainless steel 304(main)/316L/309S etc.,single layer and double layer are available;

7.)   Stainless steel 409L or aluminized steel for collars on both ends

8.)   Outside braid, middle double bellows and lined inside braid

9.)   Lined with inside interlock or nothing inside

10.) Size, diameter and length can be produced as per client's requirements 

What is the automotive exhaust system bellow?                                       

Automotive exhaust system bellows (vehicle flexure hinge) is an important connection element in the automotive field. The exhaust bellows is good for automobile exhausting emission and good for reducing the air pollution caused by automobile engine exhausting to be lowest, which is owe to its own unique airproof performance, and double layers hydroform in aqueous medium.

The automotive exhaust system bellows is used to absorb the vibration of the exhaust system and prevent excessive thermal deformation, so to provide people with a more comfortable ride feeling.

They are made by SUS304 stainless steel as the main raw materials, which can endure high temperature and salt corrosion. They are can be installed with braid and joint Internal, which can silence the engine noise. Thus, the vehicle flexure joint (Automotive exhaust bellows) has become the most perfect compensation device in modern industrial.

What are the features of automobile exhaust systems bellows?          

1. Be used for exhaust systems for passenger vehicle, commercial vehicle, agricultural vehicle etc;

2. Be installed between the engine exhaust manifold and muffler, to absorb various of vibration, to decrease noise, to compensate for misalignment &thermal expansion or contraction, to make easy installation, and to increase the using life of exhaust/ muffler system;

3. Be produced with corrugated molding technology to help to get good flexibility and well airproof performance;

4. Be produced with various of structures, full sizes, unrestricted lengths, which can meet the requests of different vehicle models;

5. Be designed and manufactured according to customer’s requests;

6. Be used for decreasing air pollution;

7. Be made by stainless steel to work longer life.

How to get the specification of the exhaust bellows you need to use? 

We have at least four series exhaust bellows as General bellows, bellows with inner braid, bellows with interlock, and bellows with nipples. You can refer to the products pictures with right ID/length on our website, or contact our sales representatives with your automobile brands and models, we will willing to help on any details.

What specifications you have for automobile bellows?

We normally refer to the steel pipe ID diameter of British standard, because of the automobile bellows is compatible with the exhaust pipe. 
Common ID size: 1-3/4 "(45 mm), 2" (50.8 mm), 2-1/4 "(57.2 mm), 2-1/2" (63.5 mm), 3 "(76.2 mm), 3-1/2" (89 mm);
Common Length size: 4 "(102 mm), 6" (152 mm), 7 "(178 mm), 8" (203 mm), 9 "(230 mm), 10" (254 mm), 11 "(280 mm), 12" (305 mm).

What materials are used to make automobile bellows?                        

Automobile bellows for OEM is made by stainless steel 304,321,409L;

Automobile bellows for after-sale market is made by stainless steel 304,201,202 and 409L.