Stainless tubing

Hi all,

I've been trying to find stainless tubing with
a heavy wall, 0.75" OD , 0.1" wall or more, but have had no luck.

I only need an 18 inch long piece, but am wary of
trying to drill that length.

I need to use this in a couple of pillow block bearings so OD
dimmention is important.

McMaster sells ground hollow shafting , but they start at 1.5 inches
OD.

can anyone point me in the proper dirrection ?

TIA,

Dave