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Thread: What paint?

  1. #1

    What paint?

    I've made some frames up and put welded mesh over it to stop leaves ect from getting in the pond. The thing is the mess is galvanised so need to paint it. I was thinking of just a waterproof spray paint. What do you guys think.

    Cheers.

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  2. #2
    Extreme Koi Member Rank = Sansai perks842's Avatar
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    You could use many things, from a spray paint to hanmeritee, even masonry paint.

    Just apply it in a warm dry air area, not when it's just about to be a thunder storm or piss down lol

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  4. #3
    Zinc is very toxic to koi so it's unwise to use galvanised metal for this screen. Even if you paint it, the flexing due to movement or the expansion and contraction due to temperature will tend to make the paint flake off so you would need to continuously check and repaint it when necessary.

    Could you replace it with plastic mesh? There are many types such as the cheap garden mesh varieties or, if you prefer metal, you can get plastic coated mesh as used in screen doors.

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  6. #4
    Maybe ill look at getting them powder coated.

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  7. #5
    Quote Originally Posted by rogmondiev6 View Post
    Maybe ill look at getting them powder coated.

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    i would just replace them with welded 304 stainless steel mesh , save all the hassle and any issues later down the line.

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  9. #6
    Extreme Koi Member Rank = Sansai perks842's Avatar
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    Quote Originally Posted by markini5 View Post
    i would just replace them with welded 304 stainless steel mesh , save all the hassle and any issues later down the line.
    Provided he doesn't live near the coast lol. Or they would need to be 316.

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  11. #7
    Senior Member Rank = Grand Champion Ajm's Avatar
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    Quote Originally Posted by rogmondiev6 View Post
    Maybe ill look at getting them powder coated.

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    Rs2000 had his powder coated think he got it cheap as well
    Johnathan

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  13. #8
    Quote Originally Posted by perks842 View Post
    Provided he doesn't live near the coast lol. Or they would need to be 316.

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    he would have to live literally on the sea front getting battered by waves and driving winds off the sea before it gets effected and 304l is good enough and the most common stainless steels in use in marine environments

  14. #9
    Extreme Koi Member Rank = Sansai perks842's Avatar
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    Quote Originally Posted by markini5 View Post
    he would have to live literally on the sea front getting battered by waves and driving winds off the sea before it gets effected and 304l is good enough and the most common stainless steels in use in marine environments
    Within 25 mile yes. So a factor. 304 I always see in the marine world, and guess what. It's oxidizing,

    316 = marine/food thus koi safe.

    I also think you're getting crossed with 904l.

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    I always get marine grade SS if I’m buying anything steel for the pond so I don’t have to worry about it any time I need to salt the pond or use PP.
    I can remember once seeing pictures of someone’s water pump that literally fell in half after they PP’d the pond because the bolts has oxidised

    For something where strength is not really needed , such as to keep leaves out, plastic would seem so much cheaper and easier.

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  18. #11
    Extreme Koi Member Rank = Sansai perks842's Avatar
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    Yep, plastic cheaper and easier, but if it's going to be used every year. May as well commit to something that will last and look good.

    Like you have agreed, anything around the pond show be marine grade in my eyes, safer and don't have to worry about it. The difference in price is minimal.

    Also to clarify, the mesh required for this does not need to be a welded mesh. A woven mesh will be just as good with the correct gauge. No need for the low carbon variants that way (the L in the grade).

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    Extreme Koi Member Rank = Sansai perks842's Avatar
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    These guys are good, here is a 10mm aperture with 2mm gauge of SS316.

    Not sure on your dimensions?

    https://www.themeshcompany.com/produ...49.html#SID=59

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  22. #13
    Quote Originally Posted by perks842 View Post
    Within 25 mile yes. So a factor. 304 I always see in the marine world, and guess what. It's oxidizing,

    316 = marine/food thus koi safe.

    I also think you're getting crossed with 904l.

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    nope im not crossed with 904l your misinterpreting what im saying, my background is engineering and im an aerospace welder/sheet metal worker by trade and metallurgy as part of my apprenticeship at RR

    yes you will see 304 oxidising in the marine world but the post isnt regarding marine world, but my point still stands that 304l in the most widely used stainless steel in that environment mostly due to cost, and it being more workable steel than 316l
    and 304l is resistant to salt water in lower concentrations than sea water which is approx 3.5% salt

    my first drum filter was made almost completely of stainless steel 304l , was running for 18 months and no oxidising what so ever even when salting the pond

    IS 304 STAINLESS STEEL A GOOD CHOICE FOR MARINE ENVIRONMENTS?

    Clinton offers SAE 304 stainless steel, which can also be found under the name A2 stainless steel or 18/8 stainless steel. 304 is the most popular stainless steel alloy available on the market. It is an austenite steel, meaning that it is non-magnetic in nature. This alloy was first developed by Firth Brown Steels nearly a century ago. It was originally sold under the trademark Staybrite 18/8, because of the presence of chromium (at around 18%) and nickel (around 8%) as alloying agents.304 steel has a eutectoid point that occurs at 727 C (1,341 F). While it is not a good choice for applications that require electrical or thermal conductivity, it is well known for its excellent formability. With a carbon maximum of .03 percent, this alloy is also ideal for welding operations under 800 degrees F. While heat treatment is not an option, cold working can be performed to make the material both harder and stronger.When it comes to corrosion resistance, 304 steel is generally an excellent choice. Its molecular composition protects it from all kinds of environmental damage, including intergranular corrosion (This is a kind of corrosion that results from stress relieving or welding). The chromium content of 304 makes it more corrosion resistance in oxidizing environments, while its nickel content helps protect it from organic acids.However, 304 stainless steel does have one weakness, and that is it does not perform well in chloride environments, in particular, seawater. It is susceptible to corrosion in these cases. If marine corrosion is a major concern, a better choice would be 316 stainless steel, which has 2 percent molybdenum added to it. This difference is what makes it especially effective in marine applications.

  23. #14
    Senior Member Rank = Grand Champion Ajm's Avatar
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    Quote Originally Posted by perks842 View Post
    These guys are good, here is a 10mm aperture with 2mm gauge of SS316.

    Not sure on your dimensions?

    https://www.themeshcompany.com/produ...49.html#SID=59

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    Am using that company for a filter upgrade one of the cheapest around that I've found and seem to have any thing you would ever want
    Johnathan

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    Just a quick moderator’s note (sorry Rogmondie I’m not wanting to distract from your thread and your paint question)

    I have had to delete a few posts here because they were in violation of forum rules.
    Please discuss and even disagree with each other to your heart’s content. But please don’t descend into personal insults. This forum is supposed to be a friendly place where we seek to help each other and learn from each other. Please let’s keep it that way so we can be a safe welcoming place for people to come and ask any question.

 

 

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