Most of the commercial type stuff like hardware on power poles, guard
rails, stay wire anchors etc are galvanized with a much different
process than light gauge materials like stock tanks and residential
chainlink fence posts, stove pipe a/c ducts, roof flashing, roof
panels etc. The best process used is a cold dip which puts a heavier
concentratin of zinc/cadmium on the item, where things like stock
tanks are hot dipped or washed........coating is much thinner and not
nearly as durable. You can generally tell the difference by the
patterns of the material as well as its surface texture.
Cold process is most durable and usually more rougher in texture, and
its not uncommon to find nibs of it where it was supported during
coating.

On Fri, 17 Jun 2005 21:15:35 -0400, "RichToyBox"
wrote:

===Galvanization is generally pretty good protection against soil and soil
===moisture. Guardrail posts are galvanized, though generally a heavier
===coating, and last virtually forever, even though they have been driven
===through base stone, and soil. Soil auger anchors for telephone poles are
===also long lived.


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