Construction industry of Iran imported items are: glass, timber flooring, lighting, paint, electrical and electronic fittings and accessories, lock, key hardware and aluminum for façade design. Manufacturers and suppliers are required to have ISO 9000 certification in order to export to Iran. European Union standards (EN, BSI, DIN, ANFOR, UNI, NNI, ON, IBN, IPQ, DS, NSF, SEE, SIS, NSAI, ELOT), North America National standards (ANSI, ASTM, AGI, API), Japan National Standard (JIS) and International Standards (ISO, CODEX, ITU, IEC) are also accepted in order to export to Iran. Further information is available from the Institute of Standards and Industrial Research of Iran. Construction industry
ISO 31 ISO 31 ISO 31 (Quantities and units, International Organization for Standardization, 1992) is a deprecated international standard for the use of physical quantities and units of measurement, and formulas involving them, in scientific and educational documents. It is superseded by ISO/IEC 80000. The standard comes in 14 parts: A second international standard on quantities and units was IEC 60027 . The ISO 31 and IEC 60027 Standards were revised by the two standardization organizations in collaboration (, ) to integrate both standards into a joint standard "ISO/IEC 80000 - Quantities and Units" in which the quantities and equations used with