In the US, all metal tubes/pipes/stock for metal-working related tasks (welding, plumbing, structural stuff) comes in 20ft sections. The three options that I know of for transporting them are: trailer, box truck or roof rack.
A 22foot truck with roof rack would be perfect for someone who works with metal e.g. a plumber. A smaller truck would work but then you’ve got a bunch of pipes hanging off like you’re in a jousting tournament.
Aright then, how about for a ladder? Do you want to drive a box truck or trailer around to hold one ladder and painting supplies or whatever?