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Coating steel poles inside/outside to prevent rust.



May 16, 2012

Q. We manufacture 6-12" diameter steel poles 10-30' long that have doors installed in them to access the inside of the pole for battery storage. On the inside of the poles we fabricate additional shelving/brackets and other modifications made of steel.

We have been powder-coating the outside of the poles typically. Recently we had a situation where, when exposed to roadway sand/salt along a freeway in Canada, the exterior powder-coating failed.

We have also had problems with rust on the interior of the poles as well.

What other options should we consider for protecting inside and outside?

Hinges, threaded holes and other fittings are attached to these poles as well.

Thanks for your help.

Collin Sloan
Manager - Boise, Idaho, USA


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