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post #16 of 18 Old 07-29-2010, 11:55 PM
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1980 CJ7 
Join Date: Jun 2007
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Originally Posted by Ironworker709 View Post
The only REAL difference is the way it is measured, a 2" TUBE is measured 2" outside to outside....
A 2" PIPE is measured 2" from inside to inside edge.

Most people don't know much about how strong pipe really is for the fact the popularity of using just TUBE for jeeps and 4x4's because it's a little easier to measure for simpe fabrication for the hobbiest.

You can get DOM tubing AND pipe..
You can get welded seam tubing AND pipe..
You can get chromolly in both...

Any process of tubing made is also made in pipe.

In the past 30+ years i've been an ironworker i've welded..fabricated and put up PIPE being used for structural purposes on bridges..power plants..buildings..etc etc designed by some of the BEST engineers in the world..it just all depends on the availability and price of which they decide to use.

If you want to get technical,,a 2" PIPE is stronger than a 2" TUBE made of the same material and process..pipe has the larger diameter than the tube....

I made both my bumpers from schedule 40 2" PIPE...i've YANKED HARD on them pulling myself and other vehicles out of mud holes..SLAMMED into trees and river rocks with them...and recently rolled my jeep on it's side when i hit a tree so hard it flipped it from the front bumper hitting the tree..and to this day they have no kinks or bends in them,just several different coats of paint from the abuse..lol

You can get PIPE dies for the same benders used for tubing and vise versa


Ironworker709 is correct in many ways....

I feel the need to add my 2 cents because I have read several posts about pipe vs. tube. I personally would use tube for things like roll bars, but pipe is definitely okay for a bumper. for one reason, you are going to need a larger quantity of tube for a roll bar so you are not likely to use scrap. For a bumper, you only need a small amount and scrap is a likely choice. Either one is going to bend if you hit something hard enough. You'll probably bend the frame first anyways. The strength to weight ratio for tube is better so the more you use, the more weight you save. And if you are going to use it to save your life in a roll, get the tube.

...and pipe is a stuctural shape. I specify sch 40 pipe for columns all the time in my designs...I'm a Structural Engineer.

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post #17 of 18 Old 07-30-2010, 04:43 AM
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1980 CJ5 
Join Date: Nov 2002
Location: Newport News, VA
Posts: 12,285
I've used Sch40 pipe (1 1/4") for exo cage stuff before. It held up well.

Couple things that turn me off to using it for cage work... the mill scale makes it rougher looking (read ugly) than tube and the thicker wall thickness makes it heavier.

I've actually bent 1 1/4" Sch40 in a 1.75" tube die.. it works pretty good up to about 90deg bends with only minor "flattening" in the radius.

'80 CJ5 w/AMC360, T176, D44 w/Detroit 4.56, RE 4" YJ lift and 35s..

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post #18 of 18 Old 07-31-2010, 10:59 AM Thread Starter
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2002 TJ Wrangler 
Join Date: Jul 2010
Location: Arlington
Posts: 566
thanks so much guys, i think im gonna go take a few classes at the local community college and then just go from there. thanks again esp to iron and besrk

Wanted: HP30 4.88 / bikini top!!!
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bumper , pipe , tire carrier , tube , welder

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