CIDECT is an international association of leading manufacturers of structural hollow sections and pipes. Main objective is to expand and summarize knowledge, by means of funding research and design guides on structural hollow sections and promote their application in steel construction and engineering. For your benefit, cooperation with leading scientists, researchers and practitioners provides consolidated knowledge to stimulate the development of design codes and guidelines worldwide. You benefit from longterm maintained contacts and exchanges between the producers of the structural hollow sections (HSS), the steel construction companies and numerous architects and engineers throughout the world. CIDECT promotes structural hollow sections (HSS) usage for good engineering practice and suitable architecture by providing information, contacts, organizing conferences etc. 1962 CIDECT was founded as non-profit association. Until today CIDECT is operated by its members only, granting that almost all funds are used for research topics. In total more than 200 international research projects and a range of design guides had been funded or co-funded. Typically published results based on CIDECT reports are widely accepted by experts and practitioners. Finally it should be mentioned that CIDECT Design Guides have been used and accepted worldwide and are a foundation for the majority of modern standards like e.g. ANSI/AISC or Eurocode.