china near me Flexible Joint Universal EPDM Rubber Bellow Expansion Joint with Flange manufacturers

Product Description


Rubber expansion joint is a versatile connector fabricated of normal and/or artificial elastomers and fabric, if necessary, internal metallic reinforcements made to give tension reduction in piping programs because of to thermal actions and mechanical vibration.
There are lots of substance selection based on utilization location of rubber enlargement joints. Also rubber growth joints have benefits and disadvantages between of the metallic enlargement joints. CZPT enlargement joints can take in huge movement in quite brief length. They give all directional movement, such as axial, angular, lateral and torsional that may take place from exterior circumstances. Also decrease wind, shock loading and seismic movements. 

Application Places

• Heating and cooling units
• CZPT managing systems
• H2o pipes
• Desalination vegetation
• CZPT s
• Blowers and enthusiasts
• Cement sector
• CZPT business
• CZPT industy
• Wood-processing industry
• Pulp and paper industry
• Railed automobiles
• Refineries
• Shipbuilding
• Metal mills
• Sugar industry


From project operate for hugely sophisticated parts these kinds of as the Catofin method to sequence growth joints and common versatile steel hoses for servicing applications: Amosflex is your companion for plant CZPT and development, pipeline construction, device and equipment development, energy era and many other speciality marketplaces.

Technical Creating Products

High quality from roof to cellar: from bellows aspects and connections for solar thermal collectors via to underground gasoline house connections, CZPT products ensure trustworthy operational protection.


Positive aspects

Spherical joints have a distinct gain over metallic enlargement joints for corrosive programs and installations necessitating a higher cycle daily life. The contour prevents sediment accumulation and creates considerably less turbulence and strain drop than spool joints. The seal bead eradicates any necessity for gaskets among mating flanges. Spheres may possibly be put in on elevated-experience or flat-confront flanges.


COMPARISON In opposition to CZPT Enlargement JOINTS

Temperature: Rubber joints with standard construction and supplies have an upper range to 110°C. Can be offer special constructions up to 200°C. CZPT growth joints do supply a significantly better variety, from -250°C to +950°C. 

Strain: Rubber joints relying on diameter, can have stress abilities up to 15 bar with a full vacuum ranking. CZPT joints can be made for pressures up to 100 bar. 

Movements: Rubber and metal growth joints have related movement abilities in the axial plane (compression and extension). Nevertheless, rubber joints are undoubtedly ready to take up better lateral actions when in comparison to metallic joints that have comparable face to confront lengths.

Spring Costs: Rubber and steel joints do have comparable attributes in the axial plane for the common confront to face proportions. CZPT joints are significantly stiffer when subjected to lateral motion and, normally have a  reduced lateral movement ability. 

Acoustical Impedance: Although nicely developed (multi-ply) steel joints can decrease the transmission of seen vibration, they will keep on to transmit distracting and/or harming sounds. CZPT joints drastically decrease the unwanted transmission in piping programs. The elastomeric composition of the joint functions as a dampener that absorbs the best proportion of perceptible sound and vibration.

Abrasion/Erosion Resistance: Metal joints typically have a wall thickness anywhere in between .15mm to 2mm. CZPT joints are significantly thicker, 12mm to in excess of 25mm. The skinny development of metal joints helps make them inclined to erosive substances and abrasive liquids and slurries. CZPT joints are hugely resistant to abrasion and erosion of all kinds and outperform metal joints in the applications where these situations prevail.

Fatigue/Cycle Existence: The fatigue life of a steel joint is influenced by many variables this kind of as temperature, pressure, motion, vibration and how the joint was to begin with designed. Generally, metal joints have a described cycle or exhaustion daily life that can be calculated through CZPT formulation (EJMA). CZPT joints often succumb to exhaustion failure from extreme biking/motion. CZPT joints on the other hand are built of resilient elastomers and the joint alone functions as a vibration dampener, not vulnerable to tiredness/cycle failure.

Installation/Maintenance: Rubber joints do not require extra gasketing and, in numerous circumstances, are set up without the use of particular dealing with tools. CZPT joints have to be serviced from time to time to insure that the flange gasket is even now intact and not deteriorated

Material Selection

Content assortment of rubber enlargement joints are really variable and is dependent on the pressure, temperature, fluid and many others. parameters. The frequent resources are, EPDM, IIR, NBR, PTFE and mixed with these resources relies upon of usage region. Also the inner tube and outer tube’s diameter can be diverse is dependent of layout situations. 

Table I: CZPT imum Temperature Rankings
Reinforcing Cloth Tube or Protect Elastomer
Pure Gum CZPT Neoprene Butyl Nitrile Hypalon® EPDM FKM
Nylon 180 °F / eighty two °C 225 °F / 107 °C 250 °F / 121 °C 210 °F / ninety nine °C 250 °F / 121 °C 250 °F / 121 °C 250 °F / 121 °C
Polyester a hundred and eighty °F / eighty two °C 225 °F / 107 °C 250 °F / 121 °C 210 °F / 99 °C 250 °F / 121 °C 250 °F / 121 °C 250 °F / 121 °C
Aramid one hundred eighty °F / 82 °C 225 °F / 107 °C 300 °F / 149 °C 210 °F / ninety nine °C 250 °F / 121 °C 300 °F / 149 °C four hundred °F / 204 °C


Desk II. List of Elastomers Employed in Growth CZPT s and CZPT Pipes
D1418-seventy seven
5-Very CZPT
4-Very good
3-Reasonable to CZPT
one-Poor to Fair
-Very poor
X-Make contact with Mfg.
Fragrant HYDRO
Drinking water ABSORP
Inflammation IN CZPT
COMP. Established
Typical Name
4 3 4 4 4 one 2 3 4 6 four 5 4 three five 4 2 four five 2 4 five four 4 4 4 five 5 6 5
5 3 X X X 4 3 3 6 5 five 6 6 4 six six 6 2 7 5 5 2 four 2
5 3 X X X 4 3 three 6 5 five 6 6 4 six 6 2 2 6 five 5 2 4 2
five 6 5 4 4 3 4 4 six 4 5 5 4 3 five 2 6 four 4 4 five 6 5 5 six
five 6 6 four 6 1 six 6 6 5 6 5 5 three five 5 6 2 4 5 5 5 two 6 2 seven 7 7 7 7
5 6 5 6 6 3 6 4 6 7 6 6 7 5 4 six 6 5 4 5 four 5 six 6 7 6 7
7 7 7 7 seven 7 7 seven 7 7 7 seven 7 3 7 X X X X X X X X 4 X X X 7 seven 7 7 seven
SI GE SILICONE five 5 5 two X two 2 6 2 5 6 six 4 3 six 6 2 two 2 6 seven 6 6 6 six


Varieties OF RUBBER Expansion JOINTS

ARCH Sort:

A full confront integral flange layout is CZPT in both Solitary Arch and Several Arch Varieties.

One Narrow Arch Sort: 

Design is of fabric and rubber, bolstered with metallic rings or wire. The full experience flanges are integral with the human body of the joint and drilled to conform to the bolt sample of the companion metallic flanges of the pipeline.

This type of rubber experience flange is of adequate thickness to forma tight seal from the metallic flanges without having the use of gaskets.

Multiple Slender Arch Type: 

Joints with two or much more arches may be produced to accommodate movements increased than these of which a Solitary Arch Kind joint is capable.

 Multiple Arch joints of most companies are composites of common sized arches and are able of movements of a one arch multiplied by the quantity of arches.

PTFE Lined

Spool Arch Type joints are CZPT in many normal pipe sizes with Fluoroplastic liners of TFE and/or FEP. These liners are fabricated as an integral part of the growth joint throughout manufacture and cover all wetted surfaces in the tube and flange locations. Fluoroplastic offers excellent resistance to practically all chemical compounds in the temperature selection of the enlargement joint entire body development. 

Non-metallic Strengthened Style

Built similar to the Spool “Arch” Sort besides the carcass does not have wire or steel ring reinforcement. Force resistance is attained by means of the use of specific exterior flanged retaining rings furnished with the joint.

Reducer Variety

Reducing expansion joints are used to link piping of unequal diameters. They may possibly be produced as a concentric reducer with the axis of every single end concentric with every other or as an eccentric reducer possessing the axis of every single end offset from each other. Tapers in excessive of 20 levels are not desirable.

Sleeved Arch Variety

This joint is similar to the “Arch”typeexcept that the capped sleeve ends have an I.D. dimension equivalent to the O.D. of the pipe. These joints are designed to slip in excess of the straight finishes of the open pipe and be held securely in place with clamps. This type of joint is advised only for reduced to medium force and vacuum services due to the fact of the trouble of acquiring ample clamp

Good quality OF OUR Expansion JOINT

We intention to provide items to work with optimum support existence for any working problem. As the leader of enlargement joints production, Amosflex operates its generation complying with the specifications that regarded by the most important national and worldwide bodies and industrial associations.

Further Inquiries

Nothing beats immediate contact. We are happy to just take the time for a personal dialogue with you to answer your questions on an specific foundation.
Make sure you send us an inquiry making use of the speak to sort, and we will right away get back to you.

Our CZPT er

Item Method

Organization Overview

ELIAS TONGLI is one particular of the most prestigious specialist makers of anti-vibration sequence products, which has  has a great enterprise relationship with a lot of large enterprises and CZPT firms at home and abroad. Relying on robust unbiased study and growth potential and excellent method systems, the good quality of CZPT items sales opportunities the business.
Our firm was proven in ZheJiang in 2005, and established up a manufacturing facility in HangZhou, ZheJiang Province in 2013. Our firm has supplied the types and set up of pipe joints and shock absorbers for many big scale initiatives. Our items have handed ISO9001, and are commonly used in several industries. These kinds of as the pipeline program and central air conditioning system of semiconductors, electronics, chemical sector, equipment, vehicles, constructions, CZPT d hospitals and resorts, and so forth.
For a CZPT time, we have kept in accordance with the principle of” Seriousness, Innovation, Service and Growth”. We have constantly been at the guide degree of this industry. With the principle of ” CZPT er CZPT , CZPT CZPT “, we established CZPT time cooperation with many enterprises. We warmly welcome friends from all in excess of the world to pay a visit to and negotiate business.

Q : Are you trading organization or company?

A: We are manufacturer of rubber expansion joint, metallic expansion joint, adaptable hose, dismantling joint, dresser coupling, flange adapter and flange with more than thirteen-12 months experience.

Q: Do you have products catalog?
A: Indeed, we have. Remember to tell me your e-mail or instantaneous messager, we will send out CZPT catalog.

Q: Can you provide drawings and complex information?
A: Of course, CZPT skilled technical division will layout and offer drawings and complex information.

Q: Do you give samples? Is it totally free or charged?
A: Indeed, we can provide sample cost-free but transport charges covered by CZPT er.

Q: Can the products be manufactuered by CZPT er’s necessity?
A: Indeed, the requirements stated over are the common types, we can design and manufacture as need. 



Speak to us for much more information about value and packing, transport and price cut now!

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china near me Flexible Joint Universal EPDM Rubber Bellow Expansion Joint with Flange manufacturers