![]() ![]() ISO also creates Technical Reports such as references, explanations, etc, where "TR" replace "IS" in the standard's name. ISO IS228-1:2000: Pipe threads where pressure-tight joints are not made on the threads - Part 1: Dimensions, tolerances and designation ![]() In addition may European and Domestic versions be publishes as:ĮN ISO nnnnn = European version of the International StandardīS EN ISO nnnnn = British version of the European version of the International Standard Example ISO number ISO standards are numbered with the format: In some cases, it is recommended to leave some sequential numbers unused in case more drawings need to be added in the future. It is basically a 2-digit number from 00 to 99. It is basically a number indicating the sequence of the drawings and the order which they should be sorted. ISO is intended to standardise technical rules worldwide, thus simplifying the exchange of goods and removing trade barriers.įor the world's largest developer of standards the principal activity is development of technical and economical standards and the ISO Standards cover a wide variety of items ranging from medical equipment to shipbuilding: The last two digits on the drawing number act as the name suggests. ISO - the International Organization for Standardization - is an international standard setting body made up of representatives from national standards bodies.
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