[TowerTalk] Regalvanizing tower sections

[Georgens, Tom]

Neal -

Last year I replaced several BX tower sections located in a very corrosion
intensive environment.  I contemplated having the sections double galvanized
as the parts are galvanized prior to assembly.  I contacted the (current)
manufacturer to see if they would do it for me.  What I has told is that the
rivets were made of aluminum and could not stand being dipped in the tank.

I don't know if that applies to older sections but is something you should
check into before having them dipped

73, Tom W2SC


-----Original Message-----
From: Neal Cox [mailto:ncoxsr at wt.net]
Sent: Friday, March 19, 2004 9:37 AM
To: towertalk at contesting.com
Subject: [TowerTalk] Regalvanizing tower sections


I have a Rohn HDBX tower that contains sections where the galvanizing has
failed and the metal is rusting. I've considered rust stabilizer coating,
"cold galvanizing", and having the sections regalvanized.
The sections can be regalvanized at a moderate cost in the North Texas area
for $0.48/lb. However
a representative for the firm providing me the quote warned that warpage of
the sections would probably
take place because of the high heat involved in the process. I have learned
that "cold galvanizing" isn't
galvanizing, just coating with a zinc rich paint. The rust stabilizer sounds
good but I wonder how it well
it would work on a tower constantly exposed to the weather. Also, the
regalvanizing processs includes
removing the old galvanizing and then hot dip galvanizing. The cost is
$0.16/lb to strip and $0.32/lb to
galvanize. My Rohn HDBX32 has been up for 21 years. Any suggestions?

Thanks, Neal, K5WZI


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