Rubber Expansion Bellows DN40-600 EPDM Flexible Rubber Joint
Expansion bellows is commonly known as rubber joint. Expansion bellows is widely used in water, electricity, chemical industry and ship
mooring system. The expansion bellows can be automatically extended with the natural change of weather
during use. The structural material of the expansion bellows is nylon cord fabric, and the inner and outer surfaces are made of
high strength aging resistant polar rubber. In order to prevent the
natural shrinkage and reduce the aging fracture of expansion bellows in long-term use, steel wire is used for multiple protection.
Performance characteristics of expansion rubber joint
1. The expansion bellows has the advantages of small size, light weight, good ductility and
convenient installation and maintenance.
2. Expansion bellows installation can cause horizontal, radial, angular offset, will not
be limited by the pipe plug center, flange uneven surface.
3. When theexpansion bellows is working, it can reduce the structure transmission noise and has
strong vibration absorption ability.
Technical data of expansion bellows
Main data of expansion bellows
|Nominal diameter(DN)||Length||Axial displacement(mm)||Horizontal displacement||Deflexion angle|
Note: 1. The special requirements of expansion bellows can be customized according to user's drawing. Flange standard is
GB / t9115.1-2000. Various flange standards (GB, JB, Hg, CB, ANSI,
DIN, BSEN, NF, en, JIS, ISO, etc.) can be selected for production.
The rubber ball of expansion bellows can be used as natural rubber, EPDM, chloroprene rubber, butyl
rubber, butadiene rubber, fluororubber, etc. when the expansion bellows above DN200 is used for suspension water supply, the pipeline must
have fixed support or fixed support, otherwise the expansion bellows shall be installed with anti falling device.
Expansion bellows details show
Expansion bellows production Flow
Do you know how is a expansion bellows made?Let's see with JINGNING.
It is very important to know the compatibility between the medium
of expansion bellows and the selected expansion bellows material, the range of full temperature, full pressure and full
vacuum, the required movement of expansion bellows, and the size between pipe flanges when selecting the appropriate
flexible joint pipe. With this information, JINGNING application
engineers can help determine the ideal expansion bellows for any application.
Expansion bellows advantage
1. Factory price of expansion bellows.
2. 16 years of manufacturing experience, 5 years of export
3. Strict quality inspection, the quality far exceeds the industry
4. Expansion bellows mold has a variety of specifications, support customization, OEM.
5. Provide free samples of expansion bellows.
6. Expansion bellows are in large stock.
Expansion bellows application
Expansion bellows are widely used in various pipeline systems, such as the connection
of expansion bellows with pumps and valves, fire-fighting equipment and pipelines with
large vibration. Pipes with frequent changes of heat and cold. Expansion bellows is mainly used for remote water and sewage lifting and
transportation, water supply and cooling circulating water of
thermal power plant, pipeline transportation of metallurgical
industry, condensate water, chemical industry, cooling and dilution
of petrochemical industry, and flexible connection between long and
short distance pipelines in other industries. Because the expansion bellows has high wear resistance, expansion bellows is also suitable for all industries of granular and powdery and gas
Q1:Can the expansion bellows be marked with customized logo?
A1:Yes,the expansion bellows can be marked with your logo. We could provide OEM&ODM service
for expansion bellows.
Q2:What’s the face to face length of expansion bellows?
A2:The face to face length of expansion bellows can be L130, L152,L203... We also could accept customized length
according to your requirements.
Q3:Can you provide drawings of expansion bellows?
A3:Yes,we could provide drawings of expansion bellows for you.Please contact us to get the drawing of expansion bellows.
Q4:What certificates of expansion bellows can you provide?
A4:We could provide CE,ISO certificate for our expansion bellows.
Q5:Can we get a sample of expansion bellows?
A5:Yes,we could provide samples for you to test the quality of our expansion bellows.
Q6:What’s the warranty period of expansion bellows?
A6:We provide 18 months’ warranty for our expansion bellows.
A3: Of cause. We could delivery by Express,by air or by sea.
Q4: What is the MOQ of expansion rubber?
A4: 1 Piece, You can also get it as a sample to test our product
quality ,then you can purchase order to us .