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GJQ(X)-DF-II DN1200 PN10 single ball expansion rubber joints

FOB Price: US $4 - 200 / Set Get Latest Price
Min.Order Quantity: 1 Set/Sets
Supply Ability: 5000 Set/Sets per Month
Port: Shanghai,Tianjian,Qingdao
Payment Terms: L/C,T/T
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Quick Details

Rubber and Carbon Steel
Place of Origin:
Henan China (Mainland)
Model Number:
GJQ(X)-DF-II rubber joint
Brand Name:
Liwei rubber joint
Head Code:
expansion rubber joint
Working pressure:
Applicable medium:
Air,water,gas,weak acid,weak alkali

Packaging & Delivery

Packaging Detail: Liwei rubber joint common packge is unfumigation wooden case (Out package) and Plastic film and Textile membrane(inside package). We can make change as your request.
Delivery Detail: 7-40 working days according to the amount you booked



Product Description

DN1200  single ball expansion rubber joints introduction

Rubber joint is also called: flexible rubber expansion coupling, rubber soft connection, and soft rubber joint, rubber compensator, rubber shock hose, rubber shock reducer, is one kind of high elasticity, high air tightness, medium resistance and weather ability pipe fittings.

Rubber expansion joint consists of outer rubber, inner rubber, framework layer, and reinforcing bar and flange. Relying on rubber’s special performances as long range elasticity, air impermeability, medium, climate and radiation resistance, rubber expansion couplings can reduce the vibration and noise of pipeline, and can be caused by the temperature change of heat bilges cold shrink compensation effect.



Applicable medium:

According to different material, acid resistance rubber joint, alkali proof rubber couplings, oil resistance rubber couplings, thermos table rubber couplings, low temperature resistance rubber joint, wear resistance rubber coupling can be made to suitable for various kinds of medium and environment.


Directions of use:

When expansion rubber joint was used in high water, pipe must have fixed support or fixed bracket, or the product should be installation device to prevent pulled off. The fore of fixed support or fixed bracket must be greater than the axial force.







Inner  rubber



Outer  rubber



Framework  layer

Polyester  cord  fabric


Reinforcing  bar

Polyester  cord  fabric


Reinforcing  ring

Steel  wire  rope



Draft Drawing



ITEMRubber joint   (mm) GJQ(X)-DF
FlangeCarbon Steel
Framework LayerPolyester cord fabric
Reinforcing RingSteel Wire Rope
Performance DatePressure pressurePN16
Working PressurePN10
Burst Pressureappx, 6 times working pressure
Design Temperature130℃
Allowable MovementAxial extension50
Axial compression60
Radial displacement38
Deflexion Displacement±10°




Packaging & Shipping



Company Information


Henan Liwei Industry 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 chem-

-ical 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.





 If you want other size expansion joint rubber joint size, please read this datesheet


Product used in named company. 


Flexible Expansion  Rubber Joint Installation Directions

  1. During pipe construction, the flexible rubber joint shall be kept natural, do not deform the product purposely when installing.
  2. During installing flange losing rubber joint, the enhancing ring(jutted inner steel wire rope)of spherical two ends shall be completely installed inside the flange slot so as to prevent balls to break away from flanges when pipes bear pressure, During installing bolts, screw down sym-metric six/four bolts and keep balls and flanges remaining in order.
  3. When connecting rubber joint and pipe flange, the bolt pole shall extend to the pipe flange so as to prevent from crushing or pricking the coved screw thread expanding because of pressure, all bolts shall be pressured and screwed down and word congruously. If the surrounding circumstance is bad, spring washer and flat gasket shall be added to prevent bolts from losing.
  4. If arch/high arc rubber joints are adapted(for six-angle bolt cannot pass through flange hole),double-head bolts shall be used and try to reduce spherical screw thread jut and avoid crushing balls expanding under pressure and prevent early damage of rubber.
  5. When frequently use the rubber joint or near water(oil)pup nozzles, stop block shall be added on both ends of flans so as to reduce the impace on pump and pipe caused by the length changes of rubber joint.
  6. When adapting over Dn1000 © Lrubber joint, some length short pipe shall be made on one flange end so as to help installation and reduce labor strength. After connecting rubber joint and the short pipe and the other pipe, weld the short pipe and relevant pipe together.
  7. In order to remove the radial deviation formed by short pipe welding, use round steel or other relevant metal to temporarily weld flanges on pipe′s two ends and make the rubber joint and flange be a steel body. After welding, remove the welding again and keep the rubber joint natural as usual.
  8. When welding metal and flange, remember to cover the rubber joint with shielding and prevent from burning balls.




Our company cooperates with domestic famous enterprises, and we sincerely want to cooperate with you.

Thank you for your consideration about our products, welcome to make inquire.

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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Ms. Macey Liu
Ms. Macey Liu:
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