B-L1a-GF valid for Flat Position or ALL Positions?

By 586242 Date 09-24-2014 20:06

The prequalified weld spec. for joint designation B-L1a-GF "Allowed Welding Position" column says "ALL". How can this be, given that the "F" in the designation stands for "Flat"?

By SCOTTN

Date 09-24-2014 20:28

The GF you're referring to designates the welding process.... Gmaw or Fcaw.

By 586242 Date 09-24-2014 20:39

Thanks very much for the rapid and clear reply.

By SCOTTN

Date 09-24-2014 20:47

You're very welcome. I'm glad I could help.

By ssbn727 (*****)

Date 09-24-2014 21:55 Edited 09-24-2014 22:03

Just to add to SCOTTN's excellent reply... did you look at Note #1 also? If not and you plan on using short circuit metal transfer, then the joint is no longer pre-qualified...

And with respect to FCAW... Gas shielding is not a requirement, so self shielding FCAW filler metal is allowed as an option unless that was eliminated which I'm not aware of...I presume you looked @ note #10 also...

Btw, I don't see the letter F designating the welding position allowed with a B-L1a-GF joint configuration...

Now B-L1-S & B-L1a-S does have the letter F in the "Allowed Welding Position" column box but, that's for SAW (Submerged Arc Welding). :eek:

Respectfully,
Henry