Hi Marc Le ven. 25 janv. 2019 à 09:07, Marc Gemis <marc.ge...@gmail.com> a écrit :
> In Belgium it is the inner diameter of the water main. Lowest value > I've seen is 50, highest 400 or so. > Are you sure it's the inner diameter instead of the nominal diameter? They're not always equals ISO 6708 defines the nominal diameter (DN) and it is way more used in plumbing than the internal one. https://www.techstreet.com/standards/din-en-iso-6708?product_id=1072836 OSM diameter=* regards the nominal diameter https://wiki.openstreetmap.org/wiki/Key:diameter All the best
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