Expansion joints are flexible pipelines and channel joints used in industrial installations. They provide proper installation action and are resistant to high temperature, agressive media and internal pressure. Expansion joints ensure an appropriate compensation of thermal and mechanical dilatations of the fumes channels, hot air pipelines and other media. Sema expansion joints do not contain asbestos and are able to work within temperatures of up to 1000° C and, depending on the structure, can work with overpressure of up to 3 bars. Obviously, they are designed and produced on the basis of specific guidelines and customer arrangements. Also, Sema joints are provided by the orderer with the ability to compensate dilatations of different directions, compensate and dampen vibrations of connected channels, and reduce noise. On top, they are easy to mount, allowing quick repair of the compensator coat.

Sema company offers servicing of previous installations, modernisation and safety testing of existing plants. Sema's extended service range includes measurements, design, fabric part execution, steel part preparation, supervised assembly, and continuous competent service.

The company's compensators supply many industrial branches, such as: power industry, heat engineering, refineries, steel industry, mines, paper factories, brickyards, shipyard industry, and many others.

Our designers ensure that Sema utilises up-to-date technologies in the industry. These are found by our advanced connections and tested in our production area before application. We use premium quality fabrics in our expansion joints, including glass, alsifer, silica, aramid and many more, depending on the exact plant requirements. All materials used are provided by reputable European suppliers, to increase the quality of our products. Also, Sema metal components are made using the finiest quality steel by carefully chosen executors.

Basic materials in expansion joint construction: