Building these would not be a job I'd want. Wow, a lot of time for a fairly flimsy basket.
A quick count makes 77 fittings, some of which I've never seen in a hardware store, and 82 joints of pipe. Then there is attaching the chains. Not sure about the 90s and 45s. Those look like they may just be bends. The four well placed disks hide the iffy part of the basket's bottom.