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Corrosion Resistant 32mm 40mm Single Sphere Rubber Expansion Joint Flexible Bellows

Corrosion Resistant 32mm 40mm Single Sphere Rubber Expansion Joint Flexible Bellows

40mm Single Sphere Rubber Expansion Joint

32mm Single Sphere Rubber Expansion Joint

32mm single sphere expansion joint

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Product Details
17Years' Experience
Product Name:
Corrosion Resistant Single Sphere Connector Flexible Joint Expansion Bellows
Working Pressure:
Joint Expansion
Working Temperature:
Burst Pressure:
Payment & Shipping Terms
Minimum Order Quantity
Packaging Details
carton or wooden
Delivery Time
5--15 working days
Payment Terms
Western Union, T/T, L/C, D/A, D/P, MoneyGram
Supply Ability
10000 sets per week
Product Description

Corrosion Resistant Single Sphere Connector Flexible Joint Expansion Bellows


Joint expansion can also be called: flexible rubber joint, rubber soft joint, soft joint, flexible rubber joint, etc. Joint expansion​ is a pipe connector with high elasticity, high air tightness, medium resistance and weather resistance. Joint expansion​ is a kind of composite rubber pipe which is composed of inner rubber layer, fabric reinforcement layer (the reinforcement layer has multi-layer scraped nylon cord), middle rubber layer, outer rubber layer, end reinforced metal ring or steel ring, and loose combination with metal flange or parallel joint after high temperature and high pressure vulcanization. The joint expansion​ makes use of the advantages of rubber, such as high elasticity, high gas resistance, medium resistance, weather resistance and radiation resistance. Joint expansion​ can reduce the vibration and noise of the pipeline, and compensate the thermal expansion and cold contraction caused by temperature change.


Performance characteristics of joint expansion


1. The joint expansion has the advantages of small size, light weight, good ductility and convenient installation and maintenance.

2. Joint expansion installation can cause horizontal, radial, angular offset, will not be limited by the pipe plug center, flange uneven surface.

3. When the joint expansion is working, it can reduce the structure transmission noise and has strong vibration absorption ability.


Technical data of joint expansion​​


Main data of joint expansion
Nominal diameter(DN) Length Axial displacement(mm) Horizontal displacement Deflexion angle
mm inch mm Extension Compression mm (a1+a2)°
32 1 1/4 95 6 9 9 15°
40 1 1/2 95 6 10 9 15°
50 2 105 7 10 10 15°
65 2 1/2 115 7 13 11 15°
80 3 135 8 15 12 15°
100 4 150 10 19 13 15°
125 5 165 12 19 13 15°
150 6 180 12 20 14 15°
200 8 210 16 25 22 15°
250 10 230 16 25 22 15°
300 12 245 16 25 22 15°
350 14 255 16 25 22 15°
400 16 255 16 25 22 15°
450 18 255 16 25 22 15°
500 20 255 16 25 22 15°
600 24 260 16 25 22 15°

Note: 1. The special requirements of joint expansion 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 joint expansion can be used as natural rubber, EPDM, chloroprene rubber, butyl rubber, butadiene rubber, fluororubber, etc. when the joint expansion above DN200 is used for suspension water supply, the pipeline must have fixed support or fixed support, otherwise the joint expansion shall be installed with anti falling device.


Joint expansion details show

Corrosion Resistant 32mm 40mm Single Sphere Rubber Expansion Joint Flexible Bellows 0


Joint expansion production flow


Do you know how is a joint expansion made?Let's see with JINGNING.


Corrosion Resistant 32mm 40mm Single Sphere Rubber Expansion Joint Flexible Bellows 1


It is very important to know the compatibility between the medium of joint expansion and the selected expansion rubber material, the range of full temperature, full pressure and full vacuum, the required movement of joint expansion, and the size between pipe flanges when selecting the appropriate flexible joint pipe. With this information, JINGNING application engineers can help determine the ideal joint expansion for any application.


Joint expansion advantage


1. Factory price of joint expansion.

2. 16 years of manufacturing experience, 5 years of export experience.

3. Strict quality inspection, the quality far exceeds the industry standard.

4. Joint expansion mold has a variety of specifications, support customization, OEM.

5. Provide free samples of joint expansion.

6. Joint expansion are in large stock.


Joint expansion application


Joint expansions are widely used in various pipeline systems, such as the connection of joint expansions with pumps and valves, fire-fighting equipment and pipelines with large vibration. Pipes with frequent changes of heat and cold. Joint expansion 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 joint expansion has high wear resistance, joint expansion is also suitable for all industries of granular and powdery and gas low temperature.




Q1:Can the joint expansion be marked with customized logo?

A1:Yes,the joint expansion can be marked with your logo. We could provide OEM&ODM service for joint expansion.

Q2:What’s the face to face length of joint expansion?

A2:The face to face length of joint expansion can be L130, L152,L203... We also could accept customized length according to your requirements.

Q3:Can you provide drawings of joint expansion?

A3:Yes,we could provide drawings of joint expansion for you.Please contact us to get the drawing of joint expansion.

Q4:What certificates of joint expansion can you provide?

A4:We could provide CE,ISO certificate for our joint expansion.


Q5:Can we get a sample of joint expansion?

A5:Yes,we could provide samples for you to test the quality of our joint expansion.

Q6:What’s the warranty period of joint expansion?

A6:We provide 18 months’ warranty for our joint expansion.

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