Can extrusion be good on one end and pitted in the middle section?

[dchu129]

Have here Aluminum extrused parts that are pitted.
Seems like material problem, but the same lot of material ran fine a month ago.

 

[cloa]

Could you attach a picture. Use the upload your file ot Engineeering.com link.

 

[stanweld]

Not enough information; you must be more clear in your questioning. If these are different extrusions made from the same heat, yes.

 

[Guest102023]

Why not?

More info needed.