GJQ(X)-SF-I Double Sphere Flexible Rubber Expansion Joint
GJQ(X)-SF-I Double Sphere Flexible Rubber Expansion Joint
GJQ(X)-SF-I Double Sphere Flexible Rubber Expansion Joint
GJQ(X)-SF-I Double Sphere Flexible Rubber Expansion Joint
GJQ(X)-SF-I Double Sphere Flexible Rubber Expansion Joint
GJQ(X)-SF-I Double Sphere Flexible Rubber Expansion Joint
GJQ(X)-SF-I Double Sphere Flexible Rubber Expansion Joint

GJQ(X)-SF-I Double Sphere Flexible Rubber Expansion Joint

  • BrandLanphan GJQ(X)-SF-I
  • ColorCustomized
  • OriginZhengzhou, Henan, China
  • Product SpecificationsDN32mm - DN3600mm
  • Product Pressure0.6-2.5 MPa
  • Product CertificationISO9001:2008
GJQ(X)-SF-I Double Sphere Flexible Rubber Expansion Joint belongs to double sphere type, it uses small edge card slot model flange to connect. And the rubber joint sphere is a recombination of inner & outer glue line and enhancement layer. 
GJQ(X)-SF-I Double Sphere Flexible Rubber Expansion Joint
Product Description
Flexbile rubber joint consists of rubber body and metal flanges or screw thread, which is used in metal pipe system for vibration isolation, reducing noise and displacement compensation. Flexible rubber joint also called rubber joint, rubber expansion joint , flexible joint, is a kind of pipeline system joint which has the performance of high elasticity, high air-sealed, media resistance and weather resistance. The rubber flexible joint consists of inner layer rubber, reinforcing layer with polyester cord fabric and outside layer rubber with compounded rubber pipeline. According to different media, it will use different rubber, including natural rubber, butadiene-styrene rubber, butyl rubber, butadiene-acrylonitrile rubber, EPDM, chloroprene rubber, silicone rubber, fluorous rubber and so on. And they have the performance of heat resistance, acid resistance, alkali resistance, anti-corrosion, wear resistance and oil resistance respectively.

The GJQ (X) -SF-I type flexible rubber joint belongs to the double ball type, which is connected with a small edge of the clamping groove type flange. Due to the card slot connection way sealing performance is not as good as the end face full sealing connection, The maximum diameter of GJQ (X) -SF-I type rubber joint can only reach 400mm. And the smallest diameter is 32mm. Compared with GJQ (X) -DF-I type rubber joint, the length for GJQ (X) -SF-I type joint is longer. The flexible rubber joint length for DN32 reaches 165mm, the length for DN400 also reaches 400mm. The same diameter of GJQ (X) -SF-I type rubber joint has larger axial displacement and radial displacement.

Let's use the GJQ DN32 (X) -DF-I type flexible rubber joint and GJQ (X) -SF-I flexible rubber joint as an example to compare. From the inner material and outer material, these two kinds of rubber joints has same material. Compared with GJQ (X) -DF-I type flexible rubber joint,The length of GJQ (X) -SF-I type has 75mm longer than it, also 24mm elongation larger, 40mm compression larger, radial displacement larger .But deflection displacement of the two are the same, which is 7.5 degrees. It is worth mentioning that the GJQ (X) -SF-I rubber joint of DN32 to DN150 has same radial displacement and deflection displacement, which is 45 and 7 mm. But the axial displacement becomes larger with the increase of the rubber joint length.

Product Alias:Flexible Rubber Joint,Rubber Joint,Rubber Soft Connection,Shock Absorber,Flange Soft Connection,Flexible Rubber Joint,Rubber Pipe Joint,Compensator,etc
Product Specifications: DN32mm - DN3600mm
Product Pressure: 0.6-2.5 MPa
Level of Shock Absorption: A level, shock absorption is very high
Product Certification: ISO9001:2008
Scope of Application: acid, alkali, corrosion, oil, hot and cold water, compressed air, compressed natural gas, etc
Product Color: black, physical color see goods display pictures
Working Temperature: 15-115 ℃ (ordinary) / - 30-250 ℃ (special)


Type-I Type-II Type-I Type-II Type-I Type-II
mm inch Extension Compression Extension Compression
32 1¼″ 165 30 50     45   ±7.5°  
40 1½″ 165 30 50     45   ±7.5°  
50 2″ 165 30 10     50   ±7.5°  
65 2½″ 175 30 50     45   ±7.5°  
80 3″ 175 30 50     45   ±7.5°  
100 4″ 225 35 50     45   ±7.5°  
125 5″ 225 35 50     45   ±7.5°  
150 6″ 225 35 50     45   ±7.5°  
200 8″ 325 35 60            
250 10″ 325 35 60            
300 12″ 325 35 60            
350 14″ 325 35 60            
400 16″ 400     65 70   70   ±12°
450 18″ 400     65 70   70   ±12°
500 20″ 400     65 70   70   ±12°
600 24″ 400     70 75   75   ±12°
700 28″ 450     70 75   75   ±12°
800 32″ 450     70 75   75   ±12°
900 36″ 450     70 75   75   ±12°
1000 40″ 500     75 80   70   ±12°
1200 48″ 500     75 80       ±10°
1400 56″ 500     75 80   70   ±10°
1600 64″ 500     75 80   70   ±10°
1800 72″ 550     80 85   65   ±10°
2000 80″ 550     80 85   65   ±10°
2200 88″ 550     80 85   65   ±10°
2400 96″ 550     80 85   65   ±10°
2600 104″ 550     80 85   65   ±10°
2800 112″ 550     80 85   65   ±10°
3000 120″ 550     80 85   65   ±10°
product details product details product details




1. Is the flange galvanized?
Yes, carbon steel flange not painting anticorrosive paint must be galvanized in order to avoid rusting. Usually, we choose electronic galvanized and hot dip galvanized, and most of our customers will choose hot galvanizing.
2. What kind of standard of your drilled flange?
Besides Chinese national standard, we also support American standard, German standard, British standard, Japanese standard, European standard and Australia standard. If you can give us the center distance of the hole, the number and diameter, we can also produce customized flange.
3. Does your company have spool type?
Yes, considering that the pipe length will be longer or shorter than the expection after finishing the installation of the pipes and the cost of producing new mold is expensive, we can produce spool type according to your requirements
4. Can the inner layer rubber and outside layer rubber be made using different rubber?
Yes, we can produce the rubber joint according to the environment the rubber joint is used in, and we will choose different rubber for the inner layer and outside layer.
5. Can I only buy ball without the flange?
Yes, and the price will be cheaper. For small diameter rubber joint, we have goods in stock and we can offer you a free hydrotest, but for large diameter rubber joint you need order.
6. How long is your product’s warranty?
12 month. From the day the customer receiving the goods, we grant a free replacement if the products have any problems during the guarantee period.
7. Can you offer the rubber joint sample?
For standard type of rubber joint we can offer the sample, but the customer will afford the freight. For non-standard rubber joint or more quantity, we will charge for the sample.
8. Does the rubber joint have inspection report?
Yes, all of our product will be conducted hydrotest and leave the factory with a qualified inspection report.
9. Can you offer the drawing?
Yes, we have a excellent engineer team, and they will offer your professional drawing and technical support.

customers packaging & shipping


1.28 years manufacturing experience.
2.The largest size in China:DN3600MM.
3.The longest service life, DN2600 single sphere rubber expansion joint for Tianjin Jiangbei Power Plant in 2008, it still works now.
4.Qualified Nuclear Power Plant supplier,DN2800 single sphere rubber joint for Jiangmen Nuclear Power Plant.
5.Competitive price, our price is not the lowest and not highest.

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    Contact Us
    Contacts : Lanphan
    Phone : +86-371-67447999
    Email : [email protected]
    Wechat : +86-13783661974
    Address : Room801, Building B, CC Mall, Jianshe Road, Zhongyuan District, Zhengzhou, Henan, China
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