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IndustryArena Forum > MetalWorking > Bending, Forging, Extrusion... > Bending stainless steel tube, what tool?
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  1. #1
    Join Date
    Nov 2006
    Posts
    85

    Bending stainless steel tube, what tool?

    I need some tools for bending stainless steel tubes, from 0 to 90 degrees. The dimension I want to bend is OD 42mm and 48mm with 2mm wall tickness. What kind of tool do you want to recomend for this task.

    Any toughts about this tool?
    http://cgi.ebay.com/ebaymotors/Cast-...spagenameZWDVW

  2. #2
    Join Date
    Oct 2004
    Posts
    590
    Quote Originally Posted by Sperstad View Post
    I need some tools for bending stainless steel tubes, from 0 to 90 degrees. The dimension I want to bend is OD 42mm and 48mm with 2mm wall tickness. What kind of tool do you want to recomend for this task.

    Any toughts about this tool?
    http://cgi.ebay.com/ebaymotors/Cast-...spagenameZWDVW
    For qualithy bends (i.e. without flattening the tube) you need a rotary draw bender like this.

    Chris

  3. #3
    Join Date
    Nov 2006
    Posts
    251
    Sperstad mandrel benders are the best for quality bends but press benders can do reasonable bends to, i guess it all depends on the quality of work your trying to produce .A while ago i used to bend 304 and 316 stainless motorcycle exhaust systems with a bender that was similar to a greenway press bender,although the tube was 16g and 1 3/4''- 2'' diameter they turned out quite good when the bender was set up properly.Good luck with your choice greg b

  4. #4
    Join Date
    Apr 2007
    Posts
    15
    I had that bender before. It's garbage. Don't waste your money on it. buy a Mandrel bender or build your own. Link1 Link2

  5. #5
    Join Date
    Jul 2005
    Posts
    12177
    This company Ercolina make a range of tubing benders.

    http://www.ercolina.com/ing/ercolina...n_anima_ff.htm

    The head office is in Italy.

  6. #6
    Join Date
    Nov 2006
    Posts
    251
    As i said it was simiular to a greenway bender in design we made ours our self and when set up properly it worked great with good quality bends.greg b

  7. #7
    Join Date
    Sep 2004
    Posts
    35
    I have used packed dry sand for bending thin wall 1" stainless tube but have had that approach fail on 3/4" and 1" galv steel EMT?

    A one off approach might be to use low temp casting alloys to fill and prevent collapse and then melt them out. Bismuth based that will melt in boiling water and avail in 10lb lots at aprox $25/lb.

    e.g.
    http://www.purityalloys.com/Low%20Me...p%20Alloys.htm
    http://www.bendalloy.co.uk/
    http://www.alchemycastings.com/lead-...43-Lowtemp.pdf

  8. #8
    Join Date
    Jul 2007
    Posts
    13

    water

    another option is to fill the tubes with water then freeze it prior to bending and a note about sand filling cap the end with a rag stuffed into it fill with sand standing up ,tap with a hammer on the side of the tube about 100 times refill with more sand { your packing it and the level inside the tube will drop considerably} stuff a rag into the top then bend

  9. #9
    Join Date
    Dec 2010
    Posts
    0
    I suggest you to check stainless steel tubes, from 0 to 90 degrees. these guys have all sizes available cut to size. Stainless Steel | Stainless Steel Tube

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