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Thread: Life expectancy of copper and black iron pipe

  1. #1
    DIY Member luc's Avatar
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    Default Life expectancy of copper and black iron pipe

    Hello everyone,

    We are doing some renovation on our hydonic heating system which is over 50 years old. The black iron pipe is in good condition. Just want to know if it is better to use copper pipe or black iron for our renovation. Which will have a longer life expectancy?

    Thanks,
    Luc

  2. #2
    General Engineering Contractor ballvalve's Avatar
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    Your black iron pipe is DUCTILE IRON pipe. Very good material. Gas line is junk. Do not make that mix up.

    http://www.dipra.org/

    http://www.vikinggroupinc.com/en/products/489/600
    Last edited by ballvalve; 06-17-2011 at 10:31 AM.

  3. #3
    DIY Member luc's Avatar
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    Thanks ballvalve for replying.

    So it would be better to continue with the ductile iron pipe for our renovations rather then copper!!

    Luc

  4. #4
    Retired Defense Industry Engineer jadnashua's Avatar
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    If you maintain the heating system so there are no leaks and you don't have to add water regularly, the iron pipe can last a very long time. It has problems when you introduce air into the system (by adding water - there is some gas disolved in the water). Copper works, too, but is more expensive, but easier to cut and work with. The iron pipe reacts with the O2 in side along with the moisture to rust out from inside. No O2, no rust.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  5. #5
    DIY Member luc's Avatar
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    Thanks jadnashua and ballvalve for the replies. It answers my questions.

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