DYWIDAG-SYSTEMS International (DSI) Worldwide:
A Strong Partner with Tradition
Our long tradition began in 1950 with the sale of know-how developed by the major German construction company Dyckerhoff & Widmann AG (DYWIDAG). Strong growth and the increasing internationalization in marketing innovative DYWIDAG systems lead to the concentration of DYWIDAG’s activities within a specialized department in the organization.
The DSI Group was established to market DYWIDAG Systems and technical know-how around the world and to develop new innovative systems through R&D activities in order to expand the existing range of products and systems.
Today, DSI is a global market leader in the development, production and supply of Post-Tensioning and Geotechnical Systems as well as Concrete Accessories for the construction industry. Furthermore, DSI is a leading supplier of Ground Control Solutions for the mining and tunneling industries worldwide.
March 2010
DSI acquires the remaining 38% shareholding of PROTENDIDOS DYWIDAG Ltda., Brazil.
December 2009
DSI acquires the remainder of the shares of DYWIDAG Sistemas Constructivos (DSC) in Spain. DSC now is a wholly-owned subsidiary company of the DSI Group.
February 2009
DYWIDAG-Systems International (DSI) acquires business from AGRHIMERC S.A.C., Peru and establishes DSI Peru S.A.C.. AGRHIMERC S.A.C., founded in 1997, is a well established producer of products such as friction bolts and rock reinforcement products for the mining markets.
December 2008
DSI acquires Fosminas Ancoragens Ltda., a leading producer of mining products in Brazil.
January 2008
The acquisition of MET-TECH Industries Ltd., USA extends DSI's market leadership in supplying mining products in North America.
September 2007
DSI acquires Idéaplast in France. Idéaplast produces accessories for the construction, aviation and automotive industries.
July 2007
DSI is sold by Industri Kapital to CVC Capital Partners. CVC Capital Partners is a leading international private equity company with a total of 11.6 billion Euros in equity capital.
June 2007
DSI acquires all outstanding shares of the Italian company DYWIT SPA, Milan, Italy.
May 2007
DSI acquires TUBUS Portugal. TUBUS as market leader looks back on more than 40 years’ successful activities in the supply of concrete accessories and equipment for the construction industry.
January 2007
DSI expands its Concrete Accessories Division by acquiring contec Bausysteme GmbH, Germany.
January 2007
DSI expands its mining activities in South America by acquiring Soprofint SA, headquartered in Santiago, Chile.
December 2006
DSI USA acquires Fasloc, Inc., a premier producer of Resin Cartridges for mining and tunneling in the USA.
October 2006
DSI further strengthens its tunneling and mining activities in North America by acquiring the shares of American Commercial Incorporated (ACI), Bristol, VA, USA.
September 2006
DSI strengthens its tunneling division by acquiring ALWAG Tunnelausbau Ges.m.b.H. in Pasching, Austria.
March 2006
DSI acquires the leading supplier of mining products Mexicana de Anclas Mineras in Zapopan, Jalisco, Mexico.
March 2006
DSI strengthens its mining division through the acquisition of Ground Control, based in Sudbury, Ontario, Canada.
February 2006
DSI acquires 100 percent of DSI-LANG GEOTECH LLC, PA, USA on February 1st, 2006.
September 2005
DSI acquires Artéon SA in France. This step strengthens DSI's market position in France and its market leadership for geotechnical and form tie systems in Europe.
July 2005
The European private equity firm Industry Kapital acquires DSI.
February 2005
DSI acquires Stewart Mining in Canada. This acquisition establishes DSI as the market leader for mining products in Canada.
2004
DSI strengthens its mining business by acquiring Celtite Pty Ltd (Celtite), Australia.
2003
DSI acquires the Thiessen Team’s mining business. From now on, the business as DSI-Thiessen Mining, a division of DSI Canada. In the USA, the mining business operates as DSI Ground Support, USA.
2003
DSI's worldwide network consists of more than 75 subsidiaries, licensees and agents.
2002
Integration of SUSPA GmbH activities into the German business of the DSI Group. Merger creates SUSPA-DSI GmbH.
2002
DSI opens new facility for mining products in Salt Lake City / USA and in Johannesburg / South Africa.
2000
DSI acquires ANI Strata Products and establishes a new business in the mining industry as well as in Australia.
1999
DSI acquires Swif AG, Switzerland.
The focus on acquisitions in selected markets and the restructuring of DSI's Central Technical Department will secure further growth by innovation and the development of new products and systems.
1998
Merger of all German subsidiaries plus Austrian and French affiliates into a single DSI GmbH with European branches.
1997-1995
Extension of DSI's global network through new DSI companies in Portugal and Indonesia.
New DSI representatives in Lebanon, Czech Republic, Latin America, Croatia, Bosnia, Herzegovina and Malaysia.
1994
Integration of DYWIDAG's Research and Development Department into DSI.
1992-1983
DSI companies founded in the Netherlands, South Africa, UK, Korea, Taiwan, Thailand, Venezuela and France.
DSI agencies founded in Turkey, Iran, Saudi Arabia, United Arab Emirates, Qatar and Oman.
1980
Foundation of DSI companies in Spain and Norway.
1979
Founding of additional DSI companies in Belgium, Hong Kong, Egypt and Brazil.
DYWIDAG establishes the DSI Company Group as an independent organization in order to take over the work of the Licence Department and continue the successful worldwide marketing of DYWIDAG systems and technical know-how.
1976
Application of the DYWIDAG Strand Post-Tensioning System in a pedestrian bridge over the Petuelring, Munich, Germany.
1973-1971
Knight Street Bridge
First Application in Canada of Segmental Form Traveler Construction, Vancouver, Canada.
1972
Pine Valley Bridge
First Application of Segmental Form Traveler Construction in the USA , San Diego, California.
1972-1970
First important application of DYWIDAG Bar Stay Cables at Second Main Bridge (135 + 135m spans), Frankfurt, Germany.
First significant application of DYWIDAG rock anchors with double corrosion protection in Waldeck II cavern near Kassel, Germany.
First tests are carried out on GEWI ® Piles for subsequent distribution.
Development of the DYWIDAG Strand Post-Tensioning System.
1970-1969
First distribution of the DYWIDAG Form Tie System together with ALLSPANN's post-tensioning system.
Creation of a Research & Development Department within DYWIDAG. Systematic development of additional DYWIDAG systems such as bar, ground and rock anchors using 16mm Ø threadbars and stay cable systems.
DYWIDAG subsidiaries are founded in Austria, USA, Canada and Italy.
Creation of an international network of companies for the global distribution of DYWIDAG systems and know-how.
1968
Foundation of ALLSPANN as a 100% subsidiary of DYWIDAG to serve the German Post-Tensioning market.
1967
The decision is made to market the DYWIDAG Post-Tensioning system outside the group.
The License Department is founded within DYWIDAG.
until 1965
DYWIDAG's Post-Tensioning System is exclusively used for DYWIDAG's own projects or partner projects.
1958
The Japanese Company Sumitomo Electric Industries, Ltd. obtains a licence for manufacturing and distributing DYWIDAG's Post-Tensioning System and for applying DYWIDAG's Free Cantilever Construction Method in Japan and the Far East.
1955-1957
Several post-tensioned prestressed concrete bridges are built in Austria, Sweden, Denmark, Finland, Norway and the Netherlands.
1955-1950
Rapid growth of DYWIDAG's international activities thanks to the growing worldwide recognition of DYWIDAG systems and construction projects.