Where Can I Find a 18 Inch Aluminum or Steel Tube with a 1/4+ Wall Thickness?

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Discussion Overview

The discussion revolves around finding a specific aluminum or steel tube that is at least 18 inches long, with an inner diameter (ID) between 8 to 12 inches and a wall thickness of 1/4 inch or more. Participants explore potential sources and suggestions for acquiring this material.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant expresses difficulty in finding an 18-inch tube and notes the inexperience of local metal shop staff.
  • Another participant suggests that 18 inches is a small length compared to typical tube lengths, which are often 20 feet, and recommends looking at pipe options instead.
  • A suggestion is made to contact local pipe representatives for potential spare drops that could be available, which would avoid the need to purchase a full 20-foot length.
  • A third participant provides a specific online resource (McMaster-Carr) for purchasing an 8" ID pipe and mentions the possibility of custom sizes, while also agreeing that local sources may be more economical.
  • Another participant concurs with the idea of sourcing off-cuts from local shops as the best option, but acknowledges that ordering more than needed might be necessary if local options are limited.

Areas of Agreement / Disagreement

Participants generally agree that local sources for off-cuts may be the most practical solution, but there is no consensus on the best approach, as some suggest online options while others emphasize local shops.

Contextual Notes

The discussion does not resolve the specific availability of the desired tube dimensions, and participants rely on varying assumptions about local shop capabilities and online resources.

Who May Find This Useful

Individuals seeking specific metal tubing for projects, particularly those in engineering, construction, or DIY applications, may find this discussion relevant.

skizm240
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I been looking all over for a aluminum or steel tube that is at least 18 in long

The ID of the tube will be anywhere from 8-12 inch with a 1/4+ wall thickness.

I been looking all over the place and can't seem to find this. I have asked the metal shop guys and they are not sure since they are new to the place. The experience shop guy went on vacation.

Can you please point me in the right direction?

Al

Thank you
 
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18 inches is nothing when it comes to buying tube lengths. Usually we have to buy 20 ft lengths.

With an OD in that range, you will have better luck looking at pipe. For example, an 8" nominal pipe size, schedule 20, results in an OD of 8.625 with a .25" wall. Call a local pipe rep and ask them if they have any spare drops lying around that they would be willing to get rid of. It would stink to have to buy a 20 ft. stick when you need only 18 inches.
 
Try http://www.mcmaster.com/". Specifically, item #7750K203 is three feet of 8" ID pipe for about $350. I'm sure they can also do custom sizes. But FredGarvin is right, a local place will save you on shipping at least and might be able to sell you scrap for cheap.
 
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Total agreement with Fred on this. Off-cuts from a local shop are probably the best way to get what you want. If the one that you mentioned is the only one available to you, then you might just have to bite the bullet and order out in more quantity than you want.
 

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