Henan Liwei Industry Co., Ltd.:

1. since 1988, Top 3 manufacturer of rubber expansion joint in China;

2. the Main Drafting Committee of National Standard for Rubber Expansion joint ; 

3. Qualified Supplier for CGN Nuclear Power Plant;

4. ISO9001:2008 and ISO14001:2004 Certified.

Product Performance

A) Structure: Double sphere rubber flexible joint are the soft joints of metal pipes, and consist of inner rubber, nylon cord fabric, outer rubber and metal lap joint flanges.

B) Technology: We introduce advanced technology from abroad, and combine it with Chinese production experience. In the manufacturing operation, the inner side endures high pressure; nylon cord fabrics and the inner rubber are better combined and can work under higher pressure than normal rubber flexible connectors.

C) Features: the inner adhesive layer united perfectly, bright, clean and seamless; the tag adopts the vulcanization process, perfectly matches the product. the product has features such as high pressure resistance, good elasticity, large compensation for pipe deviation, vibration absorption, less noise and easy installation, etc.

 

 

Double sphere rubber expansion flexible joint Main  Material:

 

 

 

No.	Name	Material
1	Outer/inner rubber	NR,EPDM,NBR
2	Key frame	Nylon cord fabric
3	Pressurized ring	Steel Wire Strand
4	Flange	Q235

 

 

 

Technical Conditions

 

Type	I	II	III
Work pressure MPa(Kgf/cm2)	1(10)	1.6(16)	2.5(25)
Explosion Pressure MPa(Kgf/cm2)	3.0(30)	4.8(48)	5.5(55)
Vacuum KPa(mmHg)	53.3(400)	86.7(650)	100(750)
Applicable Temprature oC	-15~115 special to -30~250
Applicable Media	Water,sea water,hot water,oil,acid,alkali etc

 

Application Range

A) Application: Double sphere rubber Expansion Flexible joint connectors are widely used in the pipe systems for water supply, drainage, circulating water, HVAC, fire protection, paper making, pharmacy, petroleum chemical industry, ship piping system, water pump, compressor and fan etc.

B) Applicable Media: the normal type is used to transport air ranges from - 15 C to 115 C, compressed air, water, sea water, oil, acid and alkali etc. the special type is used to  transport the media above ranges from - 30 C to 250 C, oil or strong alkali, strong acid and solid material.

this is the picture of double sphere rubber flexible connectors produced by Liwei. We are able to produce various sizes of rubber Expansion joint Flexible connectors as your demand.

 

Parameters of Double Sphere Rubber Flexible joint

We are able to produce rubber Expansion joint Flexible connectos range from DN 32(1.25'')-to DN 3000(120''). Special sizes are customizable.