Not logged inAmerican Welding Society Forum
Forum AWS Website Help Search Login
Up Topic Welding Industry / Technical Discussions / DOM 1026 welding properties
- - By Omega Date 05-24-2004 00:15
Can one of you guide me to the specification over this material so I can be certain of the filler metal requierments etc. Thanks in advance.
Parent - - By MBSims (****) Date 05-24-2004 01:59
If I remember correctly, ASTM A513 applies to DOM mechanical tubing.
Parent - - By Niekie3 (***) Date 05-24-2004 13:47
Hi Marty

What is DOM?

Regards
Niekie Jooste
Parent - - By MBSims (****) Date 05-26-2004 02:44
DOM = Drawn Over Mandrel

It's seamless mechanical tubing with a very smooth finish.
Parent - - By GRoberts (***) Date 05-26-2004 19:23
Actually, DOM is welded tube (not seamless), but the mandrel smooths out the weld so that it doesn't have reinforcement on the inside.
Parent - - By MBSims (****) Date 05-27-2004 02:00
Oops! Sorry for the misinformation. It has such a smooth finish, I thought it was seamless.
Parent - By GRoberts (***) Date 05-27-2004 04:35
It is the next best thing when you are looking for a good finish.
Parent - - By Niekie3 (***) Date 05-27-2004 17:59
Hi Marty and GRoberts

Thanks for your info. I have seen this, but did not bring the two together. - Thanks

Niekie
Parent - By swnorris (****) Date 05-27-2004 21:11
Actually, there are six types in this particular ASTM A513 Specification. Types 5 and 6 are the only two that are DOM. ASTM A513 Type 1 is Hot Rolled Electric-Resistance Welded (ERW) Carbon Steel Mechanical Tubing. ASTM A513 Type 2 is Cold Rolled Electric-Resistance Welded (ERW) Carbon Steel Mechanical Tubing. ASTM A513 Type 3 is "Sink Drawn" Hot-rolled Steel. ASTM A513 Type 4 is "Sink Drawn" Cold-rolled Steel. ASTM A513 Type 5 is Drawn Over Mandrel (DOM). ASTM A513 Type 6 is Drawn Over Mandrel Special Smooth ID (SSID DOM).
In the DOM process, from what I understand, a mandrel is placed inside a generic tube size and the tube is cold drawn to size by being pulled through a die, which as GRoberts indicated, causes the weld seam to virtually disappear. The die controls the outside diameter, and the mandrel controls the inside diameter. The tube is stress relieved, annealed, pickled, and the weld retested. The end result is a product which is said to be superior in finish and wall uniformity to seamless tubing.
Up Topic Welding Industry / Technical Discussions / DOM 1026 welding properties

Powered by mwForum 2.29.2 © 1999-2013 Markus Wichitill