stock exhaust manifold material?

[bevans6]

Does anyone know what type of tubing/steel is used in stock detroit diesel manifolds, the tubular ones that run from the cast iron manifolds across the engine to the turbo?

Brian

[Prevost45]

Brian
The tubing portions of the turbo piping are mild steel(low carbon) They are best welded W/Oxy acetlene
MIG being a second choice . The expantion bellows I think are stainless , MIG , TIG , mild steel or stainless rod