Need help identifying a weld joint.

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We're having a heck of a time figuring out this weld joint. What I thought it was, nobody else thinks so but nobody can agree.What is this weld joint called?1.) V-Groove2.) Joggle Joint3.) Tubular Butt Joint with built in backing4.) Spigot Joint5.) Lap Joint
Reply:According to the Gas Metal Arc Welding Handbook by William H. Minnick, 5th edition, page 60, that is a tubular butt joint with built in backing bar. I am not sure what makes it "tubular"Miller Multimatic 255
Reply:That's the closest one I could find of it. Co-workers are calling it a V-Groove, but to me it's more of a lap joint than a butt joint.
Reply:Perhaps it is used for butting tubing.  Like sign post.  It actually forms a shelf for a smaller gauge tubing to sit on. As well as provide alignment and backing???Last edited by tapwelder; 1 Week Ago at 03:41 PM.
Reply:Originally Posted by SP4NKH4RD Co-workers are calling it a V-Groove, but to me it's more of a lap joint than a butt joint.
Reply:That's just the cross section, it's a round hub that has been milled down fitting into a 3/8" plate with a beveled hole in it.
Reply:Originally Posted by SP4NKH4RDThat's just the cross section, it's a round hub that has been milled down fitting into a 3/8" plate with a beveled hole in it.
Reply:Originally Posted by 123weldi'm not sure i can visualize.      your name looks like it trying to say "SPANKHARD".   cant help but think of beating the kids, or some type of masochism.    but hey, that ur biz what u do in ur off time, at least u have a normal day job.       do u have any pics?     i mean, pics of the  parts, not the spanking bit
Reply:In regards to a WPS this joint would be considered a single vee groove (butt weld), WITH backing. In terms used in the real world this would be considered a joggle (offset) joint. Here is a quick picture from the ASME BPVC Section VIII, Div. 1:Here are a few quick pictures of an example of an elliptical head with a joggled edge:While not very common, these joints are used to speed up manufacturing as it prevents an open root, prevents the time spent adding a backing ring (which aren't allowed by many end users at this time), and allows for a relatively strong weld. In my experience these are used when welding pressure vessels using robotic welding systems which cannot handle open root joints.Cheers!Lincoln Idealarc Tig 300/300, Lincoln ranger 8, Lincoln LN-25, Miller Sidekick (keeps rockin!), Oxy/Acy torch, Miller XMT-304 with a Miller 60 series wire feeder and high freq. box, Profax positioner 8" chuck, Aaronson 3500# positioner 15" chuck
Reply:One of the shipyards I worked at used this joint on plate, we called it a joggle. Sometimes 4 plates were put together like this. They werent milled down like in that original post picture they were bent that way and both sides got welded.  What it actually is according to AWS I have no ideaLast edited by old miner called Pop; 1 Week Ago at 09:40 AM.
Reply:Originally Posted by freshintulsaIn regards to a WPS this joint would be considered a single vee groove (butt weld), WITH backing. In terms used in the real world this would be considered a joggle (offset) joint. Here is a quick picture from the ASME BPVC Section VIII, Div. 1:Here are a few quick pictures of an example of an elliptical head with a joggled edge:While not very common, these joints are used to speed up manufacturing as it prevents an open root, prevents the time spent adding a backing ring (which aren't allowed by many end users at this time), and allows for a relatively strong weld. In my experience these are used when welding pressure vessels using robotic welding systems which cannot handle open root joints.Cheers!