Any help identifying this old flatbed.....

You sure have to respect and appreciate them “survivors” from the past. Lol!

 

wash/scrub them well, then use a brush with red and white enamel paint on the logo and then tire "dressing" after a couple weeks curing time.

 

look along the frame rails below the cross-members(stringers) for welds. That will be where the hoppers attached if used.
12 inch spacing is standard for convertibles with metal floors or hoppers. The spacing helps support the plywood walls when down.
If you are going to haul nothing but lumber and hay type commodities then plywood floors over 12 inch cross-members will be adequate and will save weight. there were hay haulers in the 70's and 80's that just had tarp material under the cross-members to catch falling debris.
I would re-plumb your air system and hang your lines under the cross-members and against one frame. Poly lines will be cheaper and should work just as well.
Consider putting maxi-brake chambers on and changing the valves at the tank to control them. If your brake chambers are solid and pins and bushings are in good shape then piggyback maxi-pots are a simple way to go.

 

I believe Aztec also made outside frame trailers. I believe made in Texas

 

I used to deliver to Anchor equipment early 70s but don't remember much about them.
The LTL that I worked for had Brown trailers we hauled LTL out of Southgate Ca to Salt Lake City.
Lots of steel out EM Jorgensen to the EIMCO plants usually with Dart paper cups over the top to cube it out.
Then would load grain back to California in them.
There was a headboard and the sides and roof bows would be stored in the nose along with a tarp.The side boards were all aluminum with D rings in them.
The doors usually left on the rear and had a slot just inside to put a piece of plywood across the back.
Their were 2 straps on each panel to tighten down to trailer and the hooks on trailer for bungie cords.
Good Luck..

 

My 26’ 1950 Fruehauf-Carter still has the copper lines and cast iron glad hands. I pull it everyday. You ain’t gonna get 73 years out of poly. My ‘51 Diamond T still has all the copper. That old copper is much more thicker wall than you get today.

 

Any chance that the plastic would fit inside the copper ?