KLINGER Advantage’s Expansion Joints

Let’s get into the Expansion Joints World… What are them?

A joint is the material – or combination of materials – designed to be placed between the two parts of a mechanical joint.

Its main functions are:

  • The sealing between the parts
  • The maximum possible duration in optimal conditions

If we consider the surfaces perfectly smooth and parallel to the surface of the flange faces, the joints are not necessary. However, in practice, flanges have imperfect surfaces; they are not arranged in parallel and are often deformed.

KLINGER Advantage's Expansion Joints
KLINGER Advantage’s Expansion Joints

Do you know…?

The sealing is affected by the action of a force on the surface of the joint. This force must be sufficient to compensate for flange imperfections, internal pressure absorber and prevent leaks of the fluid transport.

Let’s explain in detail: KLINGER Advantage’s Expansion Joints

Expansion Joint is a device containing one or more flexible elements used to absorb dimensional changes such as those caused by thermal expansion or contraction of a pipeline, duct or vessel.

Bellows type expansion joints require little to no maintenance and are capable of absorbing axial, lateral and regular types of movement in a compact space.

What’s kind of them for your requirement? 

Manufacture, Quality and Design

Designing for a wide range of parameters allows products solutions to be developed both quickly and effectively.

We can manufacture bellows from various materials such as 304, 316, 321, 309S, 310S, 904L, Duplex 2507, alloy 625 and other nickel alloys.

KLINGER’s Politeknik is fully committed to a quality management process with quality as a fundamental business principle. Core of the process is achieving customer satisfaction by meeting our internal and customer requirements on time.

Among the types, you could find: Rubber, Heating System Pipe, Fabric, Fan-Coil, Weld End and so on. Do you want to know more? For download the producto portfolio, just  link here.

Manufacturing Expansion  Joints, step by step…

  1. Firstly, bellows material is cut from a sheet or coil. 
  2. Then, material is rolled to the required diameter.
  3. Rolled tubes are longitudinally welded.
  4. If bellows are multiplied each tube is put inside each other.
  5. Finally, convolutions are manufactured by mechanical or hydroforming.

Lens bellows: features and advantages

Last but not least, dents and gouges create stress risers in thin ply bellows which result in fatigue cracks over time. Lens bellows have the advantage of holding up to mechanical damage better than thin wall bellows. Other advantages of lens bellows are:

  • Weld repair can be performed by plant maintenance staff on thinck walled bellows.
  • Thicker wall of lens bellows hold up better to corrison attacks.
  • Common use of carbon steel material
  • Dran couplings can be added to the bottom of the convulation to prevent condensate build up.
Lens from KLINGER Advantage
Lens | KLINGER Advantage’s Expansion Joints

Thick walled, high convolution is durable and lasts for a long time.

Since expansion joints are generally custom designed, there are highly specialized products. It is necessary to apply the expansion joint manufactured with the necessary information for correct design. As a minimum the following information must be given: diameter, design movements, pressure and temperature, materials of construction, connection type and length.

With over 40 years of experience in the design of Expansion Joints and production, we are proud of production qualified, fast and economical solutions with our powerful engineering group which utilizes modern technologies.