International Organization for Standardization (ISO)
American National Standards Institute (ANSI)
American Bureau of Shipping (ABS)
Instruciton and Scientific Research Ministry
European Organization for Nuclear Research (C.E.R.N.)
European Space Agency (E.S.A.)
Phisics and Matter National Institute (I.N.F.M)
Aerospace Italian research center (C.I.R.A.)
American Iron and Steel Institute (AISI)
American Society of Mechanical Engineers (ASME)
American Society for Testing and Materials (ASTM)
American Welding Society (AWS)
Deutches Institut für Normung (DIN)