I'm looking for a source for the oval aluminum tubing shown in the picture or something similar. The tubing is about 18 mm on the short axis and about 35 mm on the long axis with a 2 mm wall (all measurements taken with a tape). I'm also looking for a larger size that this one will slip into, preferably with a reasonably decent fit. I need about ten feet of each. It must be a weldable alloy.
Any help would be greatly appreciated.
Thanks,
Pete