What is the wall thickness of a dana 30 tube ?

I am going to mig weld some Lca brackets onto the axle tube and would like to know the wall thickness so I can set the welder properly as not to blow a hole in the tube. I know technique comes in to play , just want to know what wall thickness is ?

ThanKs

I think it's 0.25" but it's better to wait for a confirmation!
Diego.