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The Water Cooler
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New pipe fence - paint or leave rusty?
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<blockquote data-quote="jakeman" data-source="post: 4108687" data-attributes="member: 10690"><p>Never that I know of. 50 some odd years ago they were using red lead primer, but I don’t know that they ever primed them with a red oxide. </p><p></p><p>Now they use an inorganic zinc or a zinc rich epoxy with a surface tolerant epoxy intermediate coat and generally a polyester modified aliphatic acrylic urethane. </p><p></p><p>I’ve done bridges that are incredibly old to brand new and I never came across a red oxide primer, but I’ve only done steel bridges in 8-10 states not all 50 so I suppose it’s possible some states used it at one time. </p><p></p><p>If the fence was mine, and it ain’t, I’d prep it as well as I had the patience to do and I’d use a single coat of a semigloss alkyd DTM. SW has pretty good one, but so do most other manufacturers.</p></blockquote><p></p>
[QUOTE="jakeman, post: 4108687, member: 10690"] Never that I know of. 50 some odd years ago they were using red lead primer, but I don’t know that they ever primed them with a red oxide. Now they use an inorganic zinc or a zinc rich epoxy with a surface tolerant epoxy intermediate coat and generally a polyester modified aliphatic acrylic urethane. I’ve done bridges that are incredibly old to brand new and I never came across a red oxide primer, but I’ve only done steel bridges in 8-10 states not all 50 so I suppose it’s possible some states used it at one time. If the fence was mine, and it ain’t, I’d prep it as well as I had the patience to do and I’d use a single coat of a semigloss alkyd DTM. SW has pretty good one, but so do most other manufacturers. [/QUOTE]
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New pipe fence - paint or leave rusty?
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