Would something like this type of cantilever racking work? It's not cheap, but it's very efficient.

These bundles are 6 m in length.

if 6 meters weighs 300 pounds = small cross sections.

Racks with 4" to 6" black ABS pipe might work as long as the basic platform will carry the 10 tones you can have a number of frames set 4 feet apart to carry the 6 meters of pipes and in a 5 foot height at one foot apart, 5 feet wide grid you can easily deal with 20 or more pipe sections.

ABS being waterproof and non corroding. The alternate way is racks with no pipe, but you would then need some support between racks to support the metal that is too short to reach the next raxk = jumble.

Easy to tag the pieces with marker etc.