"Charles P Lamb" wrote in message
. ..
How are commercial chain links welded? My first guess is using resistance
but I would guess the electricity would be more likely to take the path
around the link than across the touching faces.



that's funny (was thinking about this last night). that's something i've
always wondered about welded seam pipe. how come the electricity doesn't
flow around the back instead of through the joint. i mean, obviously it
works, but it would seem to me the juice would flow through the metal
instead of through the weld.