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Old 04-24-2016, 08:32 AM   #1
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Rusty Gas Line

Hi Everyone,

I've noticed that the gas lines under my RV are pretty rusty. Not quite a yellow looking at this photo make it out to be, but there is definitely rust on the pipes. The photo is of the pipe that takes the propane from the tanks and bring it to the back of the RV to be used to hook up to the outside kitchen. Anyone else have something similar? Should I just give it a scrub with a wire brush and hit it with some Rustolem paint?
How long would it take for the rust to compromise the pipe structure?

Thanks,
Mike
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Old 04-24-2016, 08:43 AM   #2
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I coated mine with POR 15.
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Old 04-24-2016, 08:48 AM   #3
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There is a product out there that will neutralize rust. Do a google search, or just ask at your local hardware store. They should have it in the paint section. Then it could be painted afterwards if you like.
I'm pretty sure that is black pipe they use, and it will take a considerable amount of time for it to eat thru.
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Old 04-24-2016, 10:46 AM   #4
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That is just surface rust, if it starts getting a lot of deep pits then it's a problem. As stated, clean it up, neutralize the rust , & a good coat of paint, but he sure to check underneath do all that is exposed.
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Old 04-24-2016, 04:21 PM   #5
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I like to use Rustoleum's Rusty Metal Primer and flat black Rustoleum after.
Using a water based neutralizer as noted above is also a good idea, just a bit more work
I like Rustoleum products because of their fish oil base. They penetrate rust and help to neutralize the future rust from occurring again.
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Old 04-24-2016, 05:48 PM   #6
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If its badly pitted get a gas fitter to replace it. Most gas codes require it to be painted if its black iron pipe......(retired gas fitter inspector). I have seen chips off rust come off causing a corrosion leak. Should have been painted at the factory.
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Old 04-25-2016, 09:11 AM   #7
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I just did mine on the weekend. wire brushed and spray painted it with Tremclad black . easy peasy.
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Old 04-26-2016, 07:30 AM   #8
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I just did mine on the weekend. wire brushed and spray painted it with Tremclad black . easy peasy.
Its best to push on a pitted area to make sure the screwdriver does not go right through. Surface rust would not be there if they had painted it at the factory. I had to shut down an apartment block due to a gas leak on rusty pipes. (35 years gas inspector and trouble man for local gas company .
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Old 04-26-2016, 10:20 AM   #9
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Winterpegger Is it possible to have a pipe rust through in 2 years?
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Old 04-26-2016, 11:13 AM   #10
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I spent 30+ years in the pipeline industry & that should be schedule 40 pipe so it should not rust through that quickly. From the looks of it it's probably surface rust from salt roads or if you live near the ocean in NC, that salty air is very corrosive on unprotected metal.
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