GJQ(X)-DF-II Single Sphere Flexible Rubber Expansion Joint is a
kind of full face rubber joint, it’s made of rubber joint sphere
and flange or flat union. Rubber joint sphere is a recombination of
inner & outer glue line and enhancement layer.
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.
GJQ (X) -DF-II type single sphere flexible rubber joint is a kind
of single sphere end face full sealing flexible rubber joint. " DF
" in the " GJQ (X) -DF " shows a single sphere, and "II" refers to
the end of the whole seal. A small edge along the card slot type is
on the opposite(side)of the end face of the full sealed rubber
joint. The edge of the rubber joint is relatively wide, which has
been extended to the outer edge of the flange.Above the outer edge
of the rubber joint ,there are bolt holes corresponding to flange.
GJQ (x) -DF-II type single sphere flexible rubber joint has same
inner layer and outer layer rubber material with GJQ (x) -DF-I type
flexible rubber joint,which can choose any kind of rubber material
,such as IIR, CR, EPDM, NR, NBR and so on. The external and
internal layers of rubber material can be different. But skeleton
layer of rubber joint are produced by polyester fabric and
enhancement layer has a steel wire ring. Flange material is also
diverse, common material is like Q235 SS304 and SS316. Flange
Standard is also varied, different countries have different
standards and commen standard is like GB standard, JIS standard
,ANSI Standard, DIN standard.GB flange standard can use GB/T
9119-2010 as a reference.
Product Alias:Flexible Rubber Joint,Rubber Joint,Rubber Soft Connection,Shock
Absorber,Flange Soft Connection,Flexible Rubber Joint,Rubber Pipe
Product Specifications: DN25mm - 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)
- According to product’s using condition, technicians will offer
- Provide detailed product performance specification;
- Provide professional quoted price;
- Provide 24-hour technical consulting reply.
- Begin to supervise from raw material, its qualified rate can reach
- Whole manufacturing process are in strict accordance with promised
procedure requirements, product qualified rate can reach to 100%;
- Provide product’s inspection record of key junctures to customers;
- Provide production schedule photos to customers at regular
- Package and transport products strictly accordance with export
- Under the premise of correct installation, normal maintenance and
using, we guarantee one-year warranty period;
- When warranty period has expired, our sold products enjoys lifetime
guarantee repair, we only charge cost price for changing product’s
standard component and sealing component;
- During installation and adjustment period, our after-sale service
staff will communicate with customers frequently to know product’s
running state in time. Assist customers to install and adjust
products until customers are satisfied;
- If product has malfunction during operation period, we’ll offer you
satisfied answer in time. We’ll reply you within 1 hour and provide
solution or send staff to spot within 24 hours after receiving
- Lifelong free technical support. Conduct satisfaction survey and
inquiry equipment running condition to clients by telephone or
e-mail semiannually from the first day of equipment running, put on
records of acquired information.
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
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.
1.30 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.