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flexible single ball rubber concentric expansion joint

FOB Price: US $ 1.98 - 359.98 / Set | Get Latest Price
Min.Order Quantity: 1 Set/Sets
Supply Ability: 1000 Set/Sets per Month
Port: Shanghai and Tianjin,Qingdao
Payment Terms: L/C,T/T,Western Union,paypal
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Quick Details

Place of Origin:
Henan, China (Mainland)
Brand Name:
Model Number:
Rubber and Carbon steel
Applicable medium:
air,water,gas,weak acid,weak alkali
ISO9001,ISO14001,BV,CE,SGS certificate

Packaging & Delivery

Packaging Details: concentric expansion joint free of fumigation wooden case (Out package) and Plastic film and Textile membrane(inside package) .We can make change as your request.
Delivery Detail: 7-30 working days according to the amount you booked

Rubber concentric expansion joint also known as flexible rubber joint, rubber flexible connectors, Rubber flexible joints, pipeline shock absorber, etc.The products are provided elasticity and High air tightness by rubber. Composite with polyester cord fabrics, which has the characteristic of high strength, strong Cold heat stability, then vulcanized by high pressure,high temperature molds.

 Material lists:






Inner rubber



Outer rubber



Framework layer

Polyester cord fabric


Reinforcing bar

Polyester cord fabric





Reinforcing ring

Steel wire rope


 Single ball rubber concentric expansion joint basic dimension:



1. Please remark the application standard of structural strength and connection size when placing an order.

 2. If the relevant parameters of flexible rubber joints needed are not within the scope of the foregoing list, please remarks. This company can design and manufacture on behalf of you.


Product Performance:

Rubber concentric expansion joint is a kind of flexible connection, mainly used to deliver liquid, gas, solid, etc. It adopts sphere body structure to compensate displacement, insulate vibration and reduce noise, which is a new rubber damping product.


 Product Features:

 (1) Economy: Compared with the systems of mechanic stretching and material damping, it has the advantages of little space covering, light weight, easy assembly and disassembly, labor saving and low cost. Its smooth inner wall can reduce flow resistance. It has good water tightness, so there is no need of gasket during the installation. It has wide application, large temperature-resistance scope and long working life. (This product can be used for 20 years if it is used indoors.)

(2) Displacement: Flange is free from pipe decentraction and imbalance. Its good flexibility allows compression, extension, distortion, deflection of vertical displacement, etc. which can prevent the pipeline from damage of deformation and foundation settlement arising from expansion caused by heat and contraction caused by cold.  

(3) Shock and noise absorption: The large damping of rubber sphere can effectively buffer and isolate vibration, control and reduce mechanical vibration, and absorb fluid impact noise. The reasonable installation between vibrating machine and metal pipe can decrease structure-borne noise by 15-25 decibels.

(4) Pressure resistance: The multilayered sphere structure can especially endure internal pressure, withstand strong blasting force and impact, and prevent deformation from external pressure. There are many pressure standards on work piece.  

(5) Reducibility: After external force compressed, it can recover to original state when this force is removed.

(6) Wide application: Different rubber material and formula can make product possess different resistance to heat, oil, corrosion, age, abrasion and ozone.



(1) According to appearance:Concentric with diameter rubber joint, concentric reducer rubber joint, eccentric reducer rubber joint.

 (2) According to the structure:single ball flexible rubber joint,Double sphere rubber joint,spheres rubber joint, elbow sphere rubber joint. 

(3) According to link the form:flange coupling,Threaded joint 

(4) According to working Pressure:0.25MPa,0.6MPa,1.0MPa,1.6MPa,2.5MPa,6.4MPa


 Application Range

 Equipped with the excellent comprehensive performances of flexible rubber joint, the product can be used for lift and transportation of raw water and sewage, transportation of water supply, cooling cycle water of thermal power plant, condensate water of metallurgy industry and chemical materials of chemical industries, cooling and dilution of oil and chemical industries and flexible connection of other industries. It is also suitable to transport all grain and powder material and gas for its high abrasive resistance.


 Sample of  rubber concentric expansion joint




working process


Our Advantages


1.   The appointed enterprise by the former chemical industry ministry.

2.   The appointed enterprise by national construction ministry

3.   The appointed enterprise by general petrol chemical company

4.   Power Equipment Network Union

5.   The industry standard drafting unit of rubber joint

6.   The member of CNEA(China Nuclear Energy Association)

7.   ISO9001:2008 and ISO14001:2004 certificate by CNAS(China National Accreditation Service Conformity Assessment)

8.   The largest vulcanizing tank in Asia:5000*15000mm

Our some certificates




Henan Liwei Industrial Co., Ltd


Address:No.68,Mengjin Road,Shangjie District,Zhengzhou,Henan,China


Tel: +86-0371-67447999         Fax: +86-0371-67447888


Mobile:18903828935               Contact: Melody            Skype:rainbowrain222

More about Henan Liwei:





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Henan Liwei Pipeline Equipment Co. Ltd (the former Zhengzhou Liwei pipeline Products Co. Ltd), located at Shangjie District, Zhengzhou city, is a manufacturer specializing in processing various steam, water, wind pipe expansion joints and compensation joints, and a main base for producing rubber , metal and non-metallic pipe joints It is also the appointed enterprise by the former chemical industry ministry, national construction ministry and general petrol chemical company, member unit of C... View detail

Basic Information

Business Type: Manufacturer, Trading Company  
Main Products: Rubber Joint,Rubber Lined Pipe and pipe fittings,expansion joint,dismantling joint,Bellows  
Number Of Employees: 101 - 200 People  

Trade & Market

Main Markets: Southeast Asia
Mid East
South Asia
Central America
South America
Southern Europe
Northern Europe
Eastern Asia
Eastern Europe
North America
Domestic Market
Western Europe
Total Annual Sales Volume: US$50 Million - US$100 Million  
Export Percentage: 21% - 30%  

Factory Information

Factory Size (Sq.meters): 30,000-50,000 square meters  
Factory Location: NO.68,Shangjie District,Zhengzhou City,Henan Province,China  
No. of Production Lines: Above 10  
Number of R&D Staff: 21 - 30 People  
Number of QC Staff: 11 - 20 People  
Certifications: ISO9001,ISO14001
Contract Manufacturing: OEM Service Offered   Design Service Offered  

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How It Works

Verified Supplier - Henan Liwei Industry Co., Ltd.
China (Mainland) | Manufacturer, Trading Company | Contact Details
Experience: Established 2005 , 15 years OEM

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Mr. Fly Zhao
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