Steel for cups

[Tree-50]

I've been trying to source some 2" sections of 8" ID pipe/tube with a 3/16" wall thickness. The local steel yard has 8" don't know the thickness but would only sell me 12ft min.. I need 4" the other couple places I found only have 8" with 1/3" walls. The scrapyard had none as well.

If anyone knows where online I can find any or if you have access and would like to help a member out let me know. At this point I'm about to just not cup the lca.