what's this part called for stepdecks?

The weight would kill you. No profit after the hardware involved to haul the rebar. A stepdeck is not for such loads, but maybe once in a blue moon.

 

It seems like you are spending a bunch of money for specialized equipment betting on the come. It would be different if you were saying you know of step deck freight you could haul. I would focus on setting up my rig for your normal haul and be as flexible as possible after that. Unless you are leaving out some information, it seems crazy to buy a step deck and a bunch of levellers to haul rebar.

 

ok this is what i know i've hauled 70' rebar on a 48' step w/3 levelers now there are two types of those available make sure you get the ones rated @12,000 that way they can't give you grief . much nicer than the ones rated @ 6000

 

yes you have, load leveler or any of the above

 

I saw an Anderson truck with that type of set up. He had one piece in opposite stake pockets, 4x4's stacked in between them, then a chain that held the pieces together so the 4x4's couldnt come out. Pretty slick. They just looked like a tube that fit in the stake pocket with "C" channel welded to it that was wide enough for the 4x4's to fit into.

 

Why not just have someone build them? An fabrication shop should be able to whip them up in an hour.