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strange copper pipe

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RonE
RonE Member Posts: 29
in THE MAIN WALL
I pulled a little oil fired boiler out last week ...I cut the 3/4 returns out so I could clean up the purge station I noticed that when you cleaned the "copper" the copper disapeared and It was steel pipe. I looked at the old stuff I pulled out and it was soldered...hnnn. I went outside and tried to braze a fitting on the steel and it worked fine. So i brazed a coupling on each return and went with copper worked fine. Have any of you guys ever seen this stuff. Just goes to show ya when ya think you seen it all...LOL

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  • helpingothershelpthemselves_2
    helpingothershelpthemselves_2 Member Posts: 326
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    Bundy Tubing

    If your in the northeast , you could be seeing "Bundy Tubing". During the war and crackdown on precious elements , a tubing that was steel , tin and just a hint of copper was utilized in place of the copper tubing we are familiar with.
    "Bundy tubing" can be soldered and brazed with great care and patience .

    There was an error rendering this rich post.

  • J Resnick
    J Resnick Member Posts: 9
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    Bundy Tubing

    Helpingothershelpthemselves
    You must have been taught by an oldtimer. Tubing was used when copper was not an object to be bought.It can be made to accept 7/8 od by also using a Compression union.
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