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Bending 60mm Aluminum Steel Exhaust Pipe (1m Length) in 3 Places Without Bender

hszan 94326 20
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How can I bend a 60 mm aluminized steel exhaust pipe about 1 m long in three places at small angles without a pipe bender?

Fill the pipe with dry sand (or use a tight-fitting steel spring), block the ends, heat each planned bend area with a burner, and bend it slowly over a rigid template or suitable form; a propane-butane burner should be enough [#7599464] [#7603908] [#7599508] [#7599841] Exhaust pipes are normally cold-bent in dies, so if you can get one, a proper pipe bender or fixed bending form is the safest way to keep the cross-section from flattening [#7603534] [#7605048]
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  • #1 7599426
    hszan
    Level 13  
    Posts: 112
    Rate: 56
    Hello,
    60mm aluminum steel exhaust pipe, length about 1m, I need to bend in three places at a small angle, how and what to do?
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    #2 7599464
    Anonymous
    Anonymous  
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    #3 7599508
    fuutro
    Level 43  
    Posts: 9921
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    Hot - heat it well with a burner where you want to bend the pipe, and then some of the pipe both sides and then manually bend it on something preferably stiff with an appropriate curvature ...
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  • #4 7599595
    hszan
    Level 13  
    Posts: 112
    Rate: 56
    Motronic wrote:

    Oh, what is aluminum steel?

    Aluminum coated steel, of course.

    Thanks for the answer :]

    And will the propane-butane burner do it or does it have to be acetylene-oxygen?
  • #5 7599841
    fuutro
    Level 43  
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    Propane-butane should do the trick.
  • #6 7602116
    robokop
    VIP Meritorious for electroda.pl  
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    fuutro wrote:
    Propane-butane should do the trick.


    Not enough. It's easier to cut a few wedges and migrate to shape.
  • #7 7602674
    MoniTOX
    Level 27  
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    E there, ordinary gas from a cylinder is enough, although it takes longer to heat up.
    I used to bend a pipe with a diameter of 40mm to a semicircle curve and it was thick-walled, and it went without sand.
  • #8 7602702
    Anonymous
    Anonymous  
  • #9 7603048
    robokop
    VIP Meritorious for electroda.pl  
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    When heated with a burner, too. Mufflers bend these pipes cold from what I once asked.
  • #10 7603534
    luke-z
    Level 16  
    Posts: 274
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    Ex works, the pipes in the exhaust systems are cold-bent, but in the dies. You can try to sprinkle sand, as Motronic advises, and block the ends ... which would not spill, hey :-) But you won't bend it on your knee. Try to find some plumber, they should have pipe dispensers.

    Added after 1 [minutes]:

    In dies, that's an inappropriate name for benders
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  • #11 7603633
    yogi009
    Level 43  
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    If we bend something cold, it can also be filled with e.g. solder, it also protects well against the loss of the circular cross-section at the bending point.
  • #12 7603694
    Piotr Pajkert
    Level 32  
    Posts: 1496
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    Hello!
    If the turning radius is small, pour water and freeze.
    Hi!

    hszan wrote:
    Hello,
    60mm aluminum steel exhaust pipe, length about 1m, I need to bend in three places at a small angle, how and what to do?
  • #13 7603832
    Zdunek 25
    Level 16  
    Posts: 132
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    You can bend cold water with dishwashing liquid to -20 ° C So now there should be no problems. You put on the ends of the pipe with a larger diameter
    and you must bend it in two people, if you have gentle arches, it is enough to lean against a tree
    with a diameter matching the bend
  • #14 7603908
    bogdan.gra
    Level 12  
    Posts: 16
    Help: 2
    Hello
    A steel spring with the inside diameter of the pipe is used to bend the pipes.
    After bending the spring, you pull it out and you have what you want.
    The biggest problem is finding the right spring - it should fit tightly into the pipe.
  • #16 7605048
    wowka
    Level 28  
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    The problem with bending pipes is that the pipe likes to coat on the bend and it should be prevented from doing so. A simple template can be made of a flat bar and two pieces of heavy plate. A thin-walled pipe is more difficult to bend because it likes to coat and break.
    You can also heat with a burner - but more than the center of the "circle" then on one side such a harmonica is made

    I edited the post. Johnny690
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  • #17 19858608
    mrokeu
    Level 10  
    Posts: 15
    Rate: 3
    I have to bend practically at an angle of 90 degrees the pipe from the radiator coming out of the wall. It is a typical steel tube. My plan is to simply use a long thick bar which I will gradually pull out to reach the maximum (start) of bending gradually in subsequent places. But I wonder if it is possible. I would like to reach a radius of about 7cm.
  • #18 19858717
    r103
    Level 37  
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    Not :D

    How is it supposed to be low-cost - thread and wind the elbow, well, you would have to borrow the threader from someone?

    More expensive - a welder with oxygen + acetylene cylinders, heat up until white and then he will go with this rod or even a rod
  • #19 19858867
    Spacewalker
    Level 33  
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    aluminum for exhaust? in fact it will be low cost and probably also short time
  • #20 19860734
    mrokeu
    Level 10  
    Posts: 15
    Rate: 3
    the situation is not interesting, the pipe is in the very corner of the bathroom, it comes out of the wall straight and goes almost next to the wall. there is practically no room for anything. neither on the bending machine, nor on the threaders (because buying or renting one or the other is not a problem), not to mention the place for winding the elbow. in addition, it is already a little bent and shabby in the place of a possible cut and round section, I'm afraid that it may not have it. and it should go from the corner to the other wall. I'm afraid the welder will ruin the tiles around. although in fact my guess is that this may be the only option.
  • #21 19861189
    r103
    Level 37  
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    Well, you need to cover your favorite tiles on the wall and floor with something, for example, with a sufficiently large piece of fibreboard, cardboard will also go away, but you may have to replace it several times because it will burn out
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Topic summary

✨ To bend a 60mm aluminum-coated steel exhaust pipe (1m length) at three places without a bender, several methods are suggested. One effective technique involves filling the pipe with sand to prevent flattening during the bend, followed by heating the desired bend areas with a propane-butane burner. Alternatively, cold bending can be achieved by using a steel spring that fits inside the pipe, or by filling the pipe with water and freezing it. Some users recommend cutting wedges to assist in shaping the pipe. Concerns about the aluminization process during welding are noted, as it may compromise the protective layer. Overall, the discussion emphasizes the importance of preventing the pipe from collapsing at the bends and suggests various DIY approaches to achieve the desired angles.
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