. Freight containers. . These codes are part of the ISO number of the container. The standard is maintained by the BIC (International Container Bureau) and covers the serial number, owner, country code, and size of any given shipping container. Description ISO 6346 is an international standard which describes the identification of a shipping container. 5. . CONTAINERS FOR LIQUID FOODSTUFFS - IDENTIFICATION. . Freight containers. 180. Data Source of information is from Container Container website (httpwww.