Quick Details

  • Material: Rubber with Reinforcement, Carbon Steel
  • Technics: Forged
  • Type: Coupling
  • Place of Origin: Henan, China (Mainland)
  • Model Number: EPDM Flexible Rubber Expansion Joint
  • Brand Name: Liwei
  • Connection: Flange
  • Shape: Equal
  • Head Code: Round
  • Elongation(under pressure): 6~85mm
  • Pressure: PN10,PN16,125PSI,150PSI
  • Applicable medium: air,water,gas,weak acid,weak alkali
  • Compression(under pressure): 10~80mm
  • Color: rubber black and blue
  • Radial displacement(under pressure): 9~60mm
  • Business: Manufacture, Trade
  • Certificate: BV, SGS, CE, ISO9001&14001
  • Size: DN32mm~3600mm
  • Name: EPDM Flexible Rubber Expansion Joint

Packaging & Delivery

Packaging Details: EPDM Flexible Rubber Expansion Joint: Non Fumigated wooden case (Out package) and Plastic film and Textile membrane(inside package). We can make change as your request.
Delivery Detail: 7-40 days according to the quantity you ordered

rubber expansion joint


Skype: maggie.liweigroup 

EPDM Flexible Rubber Expansion Joint


1) Product Performance of EPDM Flexible Rubber Expansion Joint

LIWEI Single Sphere Rubber Expansion Joint GJQ(X)-DF are designed for piping systems to absorb pipe movements, relieve stress, reduce system noise/vibration, and compensate for misalignment/offset and to protect rotating mechanical equipment against start-up surge forces. 

Single Sphere Rubber Expansion Joint GJQ(X)-DF  is a single sphere design with less length, the supply range is from 32mm to 3600mm, and design pressure can be 1.0MPa/1.6MPa/2.5MPa, which is always used where low cost or space limitation control.


2) Application Range of EPDM Flexible Rubber Expansion Joint

Equipped with the excellent comprehensive performances of Rubber Expansion Joint, LIWEI Single Sphere Rubber Expansion Joint GJQ(X)-DF  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. 


3) Features and Benefits of EPDM Flexible Rubber Expansion Joint

1, Versatile hand-built construction. Made in China 

2, Absorbs directional movement

3, Absorbs vibration, noise and shock 

4, Compensates for misalignment 

5, Wide flowing arch design 

6, Virtually eliminates sediment buildup 

7, Economical fully molded construction 

8, High vacuum rating (up to 30" Hg) can be supplied for certain sizes 

9, Special grooved flange ring design, prevent rubber end pull out 

10, Solid galvanized steel floating flanges speed the installation time 

11, High tensile aircraft cable is embedded in the raised face rubber ends to prevent pull out and avoids the sharp cutting edge of solid steel rings 

12, No gaskets required; integrally rubber flanged design, no gaskets required, DIN PN10/16 drilling standard, other flange drilling available, including ANSI 150lb/300 lb, BS, and JIS


4)Materials of EPDM Flexible Rubber Expansion Joint



5)Structure of EPDM Flexible Rubber Expansion Joint



6)Dimension of EPDM Flexible Rubber Expansion Joint



1.  The LIWEI  Single Sphere Rubber Expansion Joint GJQ(X)-DF  supply range is from DN32 to DN3600. 

2. Control units must be used when piping is not properly anchored. 

3. The rated pressure 2.5MPa products will only be sold with control units.

4. The LIWEI  Single Sphere Rubber Expansion Joint GJQ(X)-DF  Pressure rating is based on 30°C operating temperature. The pressure rating is reduced at higher temperatures.  

5. Movements shown in the above table are non-concurrent.  

6. Normally, the flange drilling is based on DIN PN16, ANSI 150/250/300 lbs, BS PN10, JIS 10K are also available upon request.  

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

8. If the relevant parameters of Rubber Expansion Joint needed are not within the scope of the foregoing list, please remarks. We can design and manufacture on behalf of you.


7)Physcial and Mechancial Properties of EPDM Flexible Rubber Expansion Joint


8)Quality System Authentification Certificate:


9) Collection of Some Product Samples:  


10) Operation Site of Company Products:


11) Projects of Henan Liwei Industry Co., Ltd.:

Company Information


        Zhengzhou Liwei Pipeline Equipment Co., ltd. (the former Zhengzhou Liwei Rubber Products Co., Ltd.) located at Shangjie District. Zhengzhou city is a manufacturer specializing in processing various steam, water, windpipe expansion 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 China Water Supply Association and power Equipment Network Union, and joints production unit recommended by China Water Association and National Metallurgy Ministry.

        Our Liwei brand flexible rubber joints have various heavy calibers, type and high quality in the county, The products series have won four patents and our company is named “Quality and Credit Unit” by Henan Province, Our product have become the first choices for national power design ,municipality and metallurgy units.

         At present, our product include four serial flexible rubber jointsthree types, tens of standard and common specification, eight series of metal pipe loosing compensation joints and fourteen standard specifications and types, eleven types of standard and common specification products for serial wind pipe non-metal compensatorsOur annual comprehensive production capacity can reach over forty thousand sets and we also process various pipe joint matching flat welding flanges (steel international/non-international standard). Our products have been sold in over thirty cities and autonomous regions, With China’s entry to the WTO; our products have been exported to foreign countries as Italy. Spain, Pakistan. Singapore and East European countries, etc, and the products have been become public famous brand products for design units and clients.

         Our company has been equipped with rich technical strength, excellent design and complete design and complete products test measures. We also own a set of strict management system and high-quality technicians, In2004; we have gained quality management and environment management authentication.

          Insisting on the rennet “Development Through Technology, Making More Friends, Creating Green Environment and Responsible for Future”, the company has been devoting itself to creating top products and well serving all clients around the world, Liwei brand products will be a red line between we and the clients for ever.


A Selection of Liwei Customers: 

We are partners with these named companies. And we also sincerity want to cooperate with you!  

More about Henan Liwei:

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