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  1. #1

    Default Sizing Tubing Inside Tubing

    Need to know what size tubing fits inside another. Is there a chart or something that lists this?

    For example if I want to build some adjustable table legs out of 2/2 square what smaller tubing would I need that would slide nicely into the 2x2?.

    Same questions works for round, rectangle, even channel I would think. Would want "closest fit" and not 1x1 inside 2x2.

    Would be nice to have achart or list or calculator or .... to make choices for orders.

  2. #2
    Join Date
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    Default

    Generally speaking a 2x2x 3/16 wall will give you an id of 1.625". A 1.5"x 1.5" tube will fit inside with a 1/16" space all around. Just match it up like that.

    You can also look up telescoping tube which gives you a tighter fit.
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  3. #3
    Join Date
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    Location
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    Cool

    Don't forget about the weld seam inside the bigger piece as it will give you fits....Bob
    Bob Wright, Grandson of Tee Nee Boat Trailer Founder
    Metal Master Fab Salem, Oh 44460
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  4. #4

    Default

    Nice vieo on the seam issue. Are there other ways of doing this?

    http://www.youtube.com/watch?v=F_IIgXafV4w

  5. #5
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    northern NJ
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    Default

    I should of mentioned not to try to use size on size structural tubing. Example being trying to slide a 2.5"x2.5" od tube into a 3x3x1/4" wall tube which would give you a 2.5" id. It won't work without some form of modification. If the 3x3 tube has a 3/16" wall it will work.
    Last edited by MMW; 10-14-2012 at 12:01 PM.
    MM250
    Trailblazer 250g
    22a feeder
    Lincoln ac/dc 225
    Victor O/A
    MM200 black face
    Whitney 30 ton hydraulic punch
    Lown 1/8x 36" power roller
    Arco roto-phase model M
    Vectrax 7x12 band saw
    Miller spectrum 875
    30a spoolgun w/wc-24
    Syncrowave 250
    RCCS-14

  6. #6
    Join Date
    Sep 2005
    Location
    Salem ,Ohio
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    3,893

    Cool

    Quote Originally Posted by Thrutraffic View Post
    Nice vieo on the seam issue. Are there other ways of doing this?

    http://www.youtube.com/watch?v=F_IIgXafV4w
    You could find the seam like the guy in the vid did, then use a die and a shop press to push the tube in a little giving some room at the seam. But you may want to make a fixture to keep the tube from bending out at the sides making another problem. Grinding it out if its going to be removable is kinda crude plus it weakens the tube. Just my thoughts...Bob
    Bob Wright, Grandson of Tee Nee Boat Trailer Founder
    Metal Master Fab Salem, Oh 44460
    Birthplace of the Silver & Deming Drill
    1999 MM185 w/185 Spoolgun,1986 Thunderbolt AC/DC
    Spool Gun conversion. How To Do It. Below.
    http://www.millerwelds.com/resources...php?albumid=48

  7. #7
    Join Date
    Dec 2007
    Location
    PA
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    346

    Default

    Here is a chart I made using standard pipe sizes.
    They are paired up and it is even possible to make a triple.
    While in theory, the 3/4" and 1" IPS combo will not work, I have found pieces that do slide together.

    Photos are of a fixture I made using 3/4" and 1" IPS stainless pipe.
    Using 3/4" pipe makes different adapters cheap to build.

    Sort of a smaller version of the 2" square trailer receiver method using 2" square tubing that many others use.

    Sorry about the crammed look. It looked ok in preview but not when I posted it.

    Size Sch ID OD

    3/4" IPS 40 0.824 1.05
    1" IPS 40 1.049 1.315


    3" IPS 40 3.068 3.50
    3 1/2" IPS 40 3.548 4.00


    3" IPS 40 3.068 3.50
    3 1/2" IPS 40 3.548 4.00
    4" IPS 40 4.026 4.50
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