Creative welding procedures (Was: flange failure)

>It raises some interesting possibilities, for example welding steel pipe to
>aluminium pipe. We could use one welder to do the steel welds, and the other
>to do the aluminium welds.

That's just silly. For the final bi-metal weld you let one welder use the other guy's equipment.

>Futher if one welder is qualified for 12mm welds
>perhaps we could use him to do two 6mm welds at the same time.
Now that's more practical.

Christopher Wright P.E.    |"They couldn't hit an elephant at
chrisw@skypoint.com        | this distance"   (last words of Gen.
___________________________| John Sedgwick, Spotsylvania 1864)