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The ultimate manhole covers site

Standard: ISO 1083

General (Click to show or hide)

Standard of the International Organization for Standardization (ISO) that defines the quality of the metal, the strength and the chemical composition of cast metal elements, including lids.

The page on the ISO site where you can purchase the standard https://www.iso.org/standard/66643.html

The Standard in the site (Click to show or hide)


An example of a cover that carries the standard on the "ultimate manhole covers" site. From this lid the picture that appears in the general section was taken.
There are 13 manhole covers in the site that has this standard
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