Certificated by BV and SGS One-ball Expansion Joint

Updateú║2013/5/20 11:13:53      Clickú║
  • Brand   Liwei
  • Model   GJQ(X)_DF
  • Description

    1.Materialú║Carbon steel and rubber 2.Technicsú║Forged 3.Temperature: -30-120 4.Certificate: ISO9...

Product Introduction

Material lists of Expansion joint





Inner rubber



Outer rubber



Framework layer

Polyester cord fabric





Reinforcing ring

Steel wire rope

Product Features of expansion joint

(1) Economy of expansion joint: 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 of expansion joint: 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 of expansion joint: 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 of expansion joint: 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 of expansion joint: After external force compressed, it can recover to original state when this force is removed.

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

Classification of expansion joint

(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

Our service
1.Your inquiry related to our products or prices will be replied in 24hrs.
2. Well-trained and experienced staffs to answer all your enquires in fluent English
3.OEM&ODM, any your customized expansion joints, rubber lined pipe and Mill, we can help you to design and put into product.
4. Distributorship are offered for your unique design and some our current models
5.Protection of your sales area, ideas of design and all your private information

Why choose us

(1)More than 24 years experience of manufacture of expansion joint;

(2)The Main Drafter of Chinese Standard (GB/T 26121-2010) flexible rubber joint;

(3)Approved supplier for nuclear power industry;

(4)Compensator engineering research center of Zhengzhou city (Approved by National Development and Reform Commission);

(5)Member of CNEA (China Nuclear Energy Association);

(6)ISO9001:2008 and ISO14001:2004 certificated by CNAS (China National Accreditation Service for Conformity Assessment);

(7)The largest vulcanizing equipment in China (DN 5000mm*15000mm);

(8)Manufacturer the largest rubber expansion joint in China (DN3600);

(9)Strict quality control system;

(10)Professional after-sale service team;

(11)Strong R&D strength;

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