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Home > Technical > Pipes oxidation |
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chicken george Member Since: 05 Dec 2007 Location: N. Yorks Posts: 13289 |
look like air-con pipe At work
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7th May 2015 11:00 am |
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D-Man Member Since: 05 Aug 2010 Location: Basingstoke Posts: 277 |
Air-con refil/charging pipe. There's another by the brake fluid reservoir. Couldn't see oxidation in your pics but not noticed any on mine. 2011 SD4 HSE Auto
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7th May 2015 5:57 pm |
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DrRpb Member Since: 14 Oct 2012 Location: Petersfield Posts: 572 |
I have this. It appears to be a white oxide type powder but also some rust. Looks like it's on the bulkhead. Warranty job for me. Dealer sorting. Only thing I can think is the acoustic blanket screw hole is rusting. Too cramped to get in there * GONE. GS TD4 Manual MY2013. Orkney Grey with privacy, cold and clearview packs, armrests (a must!) and a spoiler.
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7th May 2015 7:01 pm |
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Landiroamer Member Since: 30 Apr 2015 Location: Devon Posts: 1185 |
White oxide type powder will form on alloy and some plated components due to salt spray picked up during the winter months on the road, especially the underside and under bonnet area of the car, not a lot you can do about it other than dont go on the salted roads or spray the items with an anti corrosive spray like a waxoyl, that though can look scruffy after a while as that picks up all the dust, but at least the component under it is still as good as new and it can be cleaned off and recoated.
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9th May 2015 7:21 am |
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chicken george Member Since: 05 Dec 2007 Location: N. Yorks Posts: 13289 |
salt ruins to look of new galvanised trailers too, used galvanised trailers not so bad, so buy anything galvanised in early summer , it should have weathered a bit and become salt proof before winter At work
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9th May 2015 8:23 am |
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BossBob Member Since: 30 Sep 2010 Location: Bristol Posts: 1376 |
That's why you shouldn't polish off the grey patina on galvanised steel. The ZnO (zinc oxide) that forms on the surface over time is more resistant to corrosion than the fresh surface. So all you do when you polish it off and make it nice and shiny again is remove some of the anti corrosion layer. Eventually you run out of zinc and the protected surface is then free to rust in the normal way. |
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10th May 2015 6:54 am |
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Landiroamer Member Since: 30 Apr 2015 Location: Devon Posts: 1185 |
Probably why my old battered dustbin is still rust free condition then.
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10th May 2015 11:20 am |
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