Painting Under water dock parts.

O

Outlaw

I used some 3/16" and 1/4" steel tubing to make some lake dock braces. They will be under water "forever". Any suggestions on what product to use when painting these parts?
 
Thanks Barry. For the portion of the brace that remains out of the water, should I put a top coat on that?
 
If located under dock I would not, if above tough call, if it was my dock and not a customers, I would induce epoxy overnight and do 4 coats and call it a day.
As a slight gamble as could be good for 3 years or 10, just cant say for sure.

Here is the part that scares me about painting above the water line, The only paint in automotive market that is air tight or waterproof is epoxy, now no problem if the part will come up for air say every 3-4 months or the water line goes down, say every winter when the lower lake level.
Most auto types paints will last 5-8 months with no air under water before bubbling.
 
As a slight gamble as could be good for 3 years or 10, just cant say for sure.

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Above was not real clear, what I meant was the epoxy above water line if exposed to sun all day.
 
This is a tough one and I have thought all weekend on this.
Here is what I would do, if two things and its for a customer, IF the posts go above the dock, let epoxy set over night and brush a good grade house paint, so home owner can touch up every three to five years.
If its yours or mine, leave in epoxy and every 3-10 years as needed gray scuff pad chalked epoxy off (it s just top layer) and brush another coat on.
 
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