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Thread: welding chromoly tube

  1. #1
    Senior Member EXPERT BUILDER
    Join Date
    Dec 2002
    spring creek nv.

    welding chromoly tube

    is there any other way to weld moly tubing besides tig welding?i've got moly tubing to build my wheelie bars but don't have a tig welder.

  2. #2
    Senior Member MASTER BUILDER
    Join Date
    May 2003
    Owingsville, Ky
    Before I purchased my tig welder, I welded some of the smaller Chrome moly tubing on my car with a mig welder. It depends on how good you are with a mig. If you don't get good penetration and the weld is just on top then it is not going to hold. I welded the removable steering wheel lug on the steering shaft and I welded the bungs in the lower control arms on the front suspension with a mig, when I was building my car 12 years ago. I have not had any issues with either.

    To be safer on the bungs for the wheelie bars, you can drill a couple of holes in the side of the tubing and do the rossette welds along with the weld around the bung to ensure the holding.

    It worked for me, but now I would only use the TIG.

    Good luck,
    Bill M

  3. #3
    Join Date
    Mar 2003
    Beaverton Ontario Canada
    Back before TIG welding, moly was welded with oxy/acetylene. I have never done it, but I have heard guys talk about it
    Someone who knows more of this may be able to give a response
    If you had the wheelie bars fitted and even tacked, you could take it to someone to get them to TIG it up for you
    take care

  4. #4
    You can use a mig on it but it wont look nearly as good. I welded some body mounts on a chromoly car and the yheld for awhile but they did end up cracking right in the middle of the bead. You would be better off tacking them and then having someone finish weld them with a Tig

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