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someones been telling me that pipe is as strong as dom tubing. i havent yet made up my mind but i want every ones opinions on this. wall thickness is greater, both have seams.....what are the benefits of each one?
 

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I am not an expert on pipe but I build alot of cages and only use tube ( .095-.120 dom). I am a field super for a large construction company and I have never seen a pipe fiter bend pipe only weld on elbows. This is not saying it is not as good and I think some people on the board have used it but one thing I do know about it is the size is called as ID on pipe and OD on tube so if you are usinr a good bender the pipe will not fit in the dies as well and can lead to not so nice bends and also cause damage to the bender. Stick with tube! My $0.02!
<IMG SRC="smilies/usa.gif" border="0"> <IMG SRC="smilies/beer.gif" border="0"> <IMG SRC="smilies/usa.gif" border="0">
 

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I'm no expert on the composition of the two but I am pretty darn sure when they get here they'll tell you the two are no where close to the same strength. It's about tensil strength or somethin. I used pipe for my bumpers and nurfs when I had the Harbor Freight bender and the nurfs seemed toy hold up very well, but I would not use it for a cage. Now I have a tube bender and only use DOM, yea the down fall is that it's several times the $$ of pipe (pipe was .32 cents a ft, tube is around $3.00) but would you put a price on the safety of you and/or family members in the rig. Just choke it up and get the tube, do it right the first time and in the long run you'll thank yourself.

[ 10-02-2001: Message edited by: ToyFamily ]
 

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The best thing to do is use DOM but you can use pipe but it's not "preffered" but not everyone can fork out $$$ for DOM. I just got 100ft of 2x.120 DOM and it was a little under $400.00 and I won't even beging telling you how much I got tied up in my JD2 Bender 1K easily. The old phrase 'You gotta pay to play" does come into effect eventually. SAFETY is the big factor for using DOM though, thats what it boils down to.
 

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i am a quality specialist for the navy and pipe has seams and is measured by inside diameter. DOM means drawn over a mandrel and has no seams, it is measured by the outside diameter and is much strongeh and tougher. Thats how it is measured in the marine / shipbuilding industry. i have seen many a piece of pipe bent that splits the seams in my years of inspection. <IMG SRC="smilies/tongue.gif" border="0">
 

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Originally posted by hip:
<STRONG>i am a quality specialist for the navy and pipe has seams and is measured by inside diameter. DOM means drawn over a mandrel and has no seams... <IMG SRC="smilies/tongue.gif" border="0"></STRONG>
Umm... <IMG SRC="smilies/rolleyes.gif" border="0">
I believe it does.
 

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Originally posted by hip:
<STRONG>i am a quality specialist for the navy and pipe has seams and is measured by inside diameter. DOM means drawn over a mandrel and has no seams, it is measured by the outside diameter and is much strongeh and tougher. Thats how it is measured in the marine / shipbuilding industry. i have seen many a piece of pipe bent that splits the seams in my years of inspection. <IMG SRC="smilies/tongue.gif" border="0"></STRONG>
DOM does have a seam. This topic has been exhausted over the past few months. As far as pipe vs tube, hell idon't know.
 

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I heard that pipe will shatter in an extreme impact. Tubing will bend and absorb the impact's energy, protecting the occupant.
 

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No expert here either and all my machining books are at home, but I think it all comes down to what happens in a rollover. Pipe will snap easier where tubing will just bend. If you want snapped off pieces of pipe sticking out for you to impale yourself on, go that route. If you want tubing that slightly deforms but stays intact, go with that. Oh and the fact that .120 pipe is something that I've rarely seen, it always seems to come as thick wall and therefore very very heavy.
 

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Yeah, don't use pipe. Pipe is made for withstanding internal pressures. Tubing is better for roll-cages. I picked up 80' of 1.5", .120 wall ERW tubing for less than a buck a foot....
 

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Originally posted by built2lastblazer:
<STRONG>someones been telling me that pipe is as strong as dom tubing. i havent yet made up my mind but i want every ones opinions on this. wall thickness is greater, both have seams.....what are the benefits of each one?</STRONG>
who told you this, BTW?
 

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From the top 10 myth thread I wrote:

Pipe is not tube BUT they are both sized by o.d. The same sized (named) tube IS NOT the SAME o.d.
as the same sized (named) pipe BUT both ARE sized by o.d.

I.D. of each is determined by wall thickness. Tubing wall thickness is usually specified as something
like (.120" wall) and pipe wall thickness may be described in some cases same as tube and in other
cases as Schedule or Wall designation....like Schedule 40 or as XXH wall.

3/4" tube is 3/4" o.d.
1" tube is 1" o.d.
12" tube is 12" o.d

3/4" pipe is 1.050" o.d.
1" pipe is 1.315" o.d.
12" pipe is 12.750" o.d.
14" pipe is 14" o.d.

A sized (named) pipe size is ALWAYS the same o.d. regardless of it's i.d. or wall thickness.

Just because the o.d. of pipe is often larger (and odd sized) than its named size, people assume pipe
is sized by i.d. .....not so!!

Think about how big a nightmare it would be mating piping systems if each wall thickness necesitated
a different o.d.

I still make a stand:

MYTH: Pipe is sized by i.d.

Jay
 

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Originally posted by Convertiyota:
<STRONG>This was an awesome discussion!!
http://www.pirate4x4.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic&f=5&t=002698

<IMG SRC="smilies/jeep1.gif" border="0"> <IMG SRC="smilies/jeep2.gif" border="0"></STRONG>
Thankyou Convertatoy I was going to finish reading this thread that is somewhat misinformed with the exception of the reply above mine and like everyone else didnt know enough on this topic and was going to post that thread. If anyone is interested in the facts they are all there.

[ 10-02-2001: Message edited by: wheelinjp ]
 
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