Dain Bramage
Well-Known Member
pros/cons, what does DOM stand for, what does HREW stand for, etc.:corn:
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Help Support Hardline Crawlers :
tube vs. DOM vs. HREW
- Thread starter Dain Bramage
- Start date
Not Jobless
Mr Funbags
Did google stop working?
Dain Bramage
Well-Known Member
nah, i am just lazy. and i want your guyseseseses (?) expert opinions.
CrustyJeep
Well-Known Member
Go hit Pirate. BillaVista did a half decent write up on tube.
Short story: DOM > HREW > pipe.
Short story: DOM > HREW > pipe.
84Toyota4x4
Well-Known Member
This is well documented info that you can find with little effort. For starters both are steel tube. Tube is measured by outside diameter and wall thickness. DOM stands for drawn over mandrel and is stronger and more expensive. HREW is hot rolled electric welded. Both can be used for structural applications.
crash2
-Oh no I picked a side-
crash2
-Oh no I picked a side-
god damn engineeers :fawkdancesmiley:
CrustyJeep
Well-Known Member
Well since that damn cisco guy went and gave actual info...
DOM (drawn over mandrel) is a finishing process usually done to CREW (COLD rolled electric welded) tube.
Pretty much any tube (or pipe for that matter) you're going to find is a welded construction, starting from a strip of flat sheet. The sheet is rolled into the tube shape, and welded in a continuous process. This gives a good tube with a small weld bead on the inside.
Once you have the basic tube, you can draw it over a mandrel. This work hardenes the tube and "squishes" the weld to the point that it's barely noticable. DOM tube is smooth inside and out, of superior strength, and made to tighter dimensional tolerances than the the welded tube it was made from.
DOM tube should be about 30% stronger than equivelant HREW.
DOM (drawn over mandrel) is a finishing process usually done to CREW (COLD rolled electric welded) tube.
Pretty much any tube (or pipe for that matter) you're going to find is a welded construction, starting from a strip of flat sheet. The sheet is rolled into the tube shape, and welded in a continuous process. This gives a good tube with a small weld bead on the inside.
Once you have the basic tube, you can draw it over a mandrel. This work hardenes the tube and "squishes" the weld to the point that it's barely noticable. DOM tube is smooth inside and out, of superior strength, and made to tighter dimensional tolerances than the the welded tube it was made from.
DOM tube should be about 30% stronger than equivelant HREW.
CrustyJeep
Well-Known Member
That's no good at all :haha:
crash2
-Oh no I picked a side-
From actual experiance I would have to say its stronger than that....
That. Is. The. Forking. Quote of... Forever™ :haha:
*waits for someone to ask where square tube comes from* :corn:
Is that kind of math even possible? :haha:
CrustyJeep
Well-Known Member
DOM has a higher ultimate tensile strength, but a MUCH higher yield strength. That means it's much harder to bend than HREW.
Have you physically torn a piece of DOM? That's where the ultimate strength comes in.
CrustyJeep
Well-Known Member
CrustyJeep
Well-Known Member
Whaa? Are engineers supposed to fess up like that?
crash2
-Oh no I picked a side-
No--(dom)just tossing a 4000# rig on a piece and it held up better than a (HREW)3000# rig banging into trees :haha: :haha:
