About us

Innovating Engineering Applications

Excellence and reliability worldwide

A leading company in stay cables, post tensioning, anti seismic devices, structural bearings and expansion joints. Based in Milan, TENSA is active in over 50 countries worldwide.

A full set of solutions

Full support to the clients, from the initial stage of the design to each following step, such as production, testing and installation. This method allows TENSA to continuously release new and customized solutions.

Investigating new solutions

TENSA's proactive research process follows the market’s demands, always developing highly innovative systems. The company takes an active part in the international technological debate as a member of FIB, the world’s most authoritative organization in the field of constructions.

Ideas run fast in TENSA

Ingenious, Dynamic, Reactive: TENSA is a lean and agile company where about 50 professionals work together in a stimulating and productive environment.

Talented people: our greatest asset

A highly specialized and experienced team of engineers and technicians, as well as their capability to work together, are the keys to all TENSA's greatest performances.

Internationally accepted certifications

Testing and control are fundamental stages carried out in TENSA's laboratory, and can guarantee the quality-compliance of the whole production process to the International Standards requirements.

Our history

  • 1951
  • 1964
  • 1970
  • 1980
  • 1990
  • 2000
  • 2010
  • 2011
  • 2012
  • 2014
  • Today

Beginning of activity.

In the sixties Tensacciai undergoes a phase of remarkable growth in Italy. Post-tensioning is just at the beginning of its history and its application is still experimental.

A programme of technological renewal begins with the adoption of the steel strand.

Tensacciai develops new tensioning systems and equipment in the field of ground anchors, combining innovation with versatility and ease of use.

New subsidiaries established in Brazil, India and Australia and in Europe sister companies in Portugal, Greece and the Netherlands.

The internationalization process of Tensacciai continues unabated.

The company becomes directly involved in projects in all five continents.

Tensacciai is acquired by Deal - world leading solutions provider in the field of bridge construction - and becomes part of the De Eccher Group. All production and delivery processes are attested by the ISO9001 certification.

Tensacciai merges with Tesit - another successful concrete specialist contractor with international experience in post-tensioning, steel bars, structural bearings and expansion joints - and enters into a Worldwide Exclusive License Agreement with TIS.

Tensacciai acquires TIS (Tecniche Idraulico-Stradali Srl) - a leading company with experience in designing and producing structural bearings, expansion joints and anti-seismic devices since 1973.

Renamed in 2015, today's TENSA is formed from the merging and development of three important companies - Tensacciai, Tesit and TIS - and is member of the De Eccher Group, an organization capable of designing, manufacturing and installing systems everywhere in the world thanks to its highly qualified personnel.

Member of

Quality and Innovation

A strong commitment to quality is the only way to ensure safe and long-lasting structures. TENSA has always complied with the most stringent and updated international standards, guaranteeing the highest quality levels at all stages.

Tens Frame Bending (TFB) - CE Certificate of Constancy of Performance EN 15129 (ICECON CERT)
Certification ISO 18001:2007 (Bureau Veritas)
Certification ISO 14001:2015 (Bureau Veritas)
CIT - Sistema stralli a trefoli paralleli - Parallel strands stay cables system
Certification ISO 9001:2008 (Bureau Veritas)
Multi-strand post-tensioning system ETA 08/0012 (Cerema)
Multi-strand post-tensioning system CE Certificate of Conformity (ETA 08/0012) (Asqpe)
Mono-strand post-tensioning system ETA 11/0007 (Cerema)
Mono-strand post-tensioning system – CE Certificate of Constancy of Performance (Aspe)
Slab and single strand post-tensioning system ETA 15/0023 (Cerema)
Slab and single strand post-tensioning system - CE Certificate of Constancy of Performance (Asqpe)
Tens Pot Bearing (TP) - CE Certificate of Constancy of Performance EN 1337 (ICECON CERT)
Tens Rubber Bearing (NR) – CE Certificate of Constancy of Performance EN 1337 (ICECON CERT)
Tens Rubber Bearing (CR) – CE Certificate of Constancy of Performance EN 1337 (ICECON CERT)
Tens Spherical Bearing (TS) – CE Certificate of Constancy of Performance EN 1337 (ICECON CERT)
Tens Damping Rubber Isolator (TDRI) – CE Certificate of Constancy of Performance EN 15129 (ICECON CERT)
Tens Lead Rubber Isolator (TLRI) – CE Certificate of Constancy of Performance EN 15129 (ICECON CERT)
Tens Elasto-Plastic Device (TEPD) – CE Certificate of Constancy of Performance EN 15129 (ICECON CERT)
Tens Shock Transmitter Device (TSTD) – CE Certificate of Constancy of Performance EN 15129 (ICECON CERT)
TS Tens Spherical Bearing - TC Tens Cylindrical Bearing (ETA 17/0403) (Icecon)