Don't they sometimes call DOM "seamless"? Though it seems like I have heard of both DOM seamless and extruded seamless
I'm pretty sure DOM is just HREW thats went through a mandrel afterwards which cold rolls it making it stronger
I believe DOM is welded tube that has had a mandrel pulled though it. Karl is referring to seamless tube. There is an argument in the tube industry over which is stronger. It is generally accepted that seamless is stronger but but can be argued the other way. The seamless people say the welds on welded tube are a weak point. The welded people say the welded tube is stronger because of more consistent wall thickness as Karl explained above. The good stuff will not show a seam anyway. We keep both in stock at work. I use the welded unless specified otherwise. If either was crap we would have blown it up by now.
I take back my previous statement, DOM is HREW that is drawn through a mandrel. This thereby makes my theory of why DOM would be heavier a flaming pile of ****.....
I see no reason why DOM should weigh more than HREW.
-Karl
2006 Chevy K3500 4X4 - No J.B. Weld on it yet!
1982 thru 94 F-Series "The Klogger" AKA Transport on the road, on the trail, or on the trailer!
1965 Chevelle
1975 Corvette
DOM should not weigh more, but I promise, it is significantly stronger. A big enough difference that you can tell real quick what you are pulling on in a bender.
Scott, FTAC '99
'62 Nissan Patrol 4-seat Twisted Customs Buggy
'89 "CJ-7" - Her trail rig
'05 Toyota Tacoma 4x4 TRD - her daily driver...
'08 Dodge 2500 Mega Cab 6.7 Diesel 4x4
scott.schubring@williams.com
The office sucks - I wanna go wheeling!
why dont we all just use square tube for our cages and frames like the square drive shaft kids?
Scott, FTAC '99
'62 Nissan Patrol 4-seat Twisted Customs Buggy
'89 "CJ-7" - Her trail rig
'05 Toyota Tacoma 4x4 TRD - her daily driver...
'08 Dodge 2500 Mega Cab 6.7 Diesel 4x4
scott.schubring@williams.com
The office sucks - I wanna go wheeling!
Ed Zachary - Cromo is for long haired pretty boys who....er wait.
I was thinking about square tube cages the other day when I was looking at all the ROPS's on tractors. Then you could pin it and make it removeable!
Seth Stewart '04
2000 Suburban DD
1995 F150 SAS - Needs more work to sell
1998 GMC pickup - sold
2003 Yukon XL - wrecked/motor donor
1975 Scout - TBD
1976 Scout - parts truck
1972 IH 1310 dually - TBD
196? Scout 800 - 302 roller
i figured this can go here. is that square tube?
http://www.fourwheeler.com/eventcove.../photo_01.html