Does anyone know what kind of plastic Beystadiums are made of?

I'm thinking of making my own Beystadium that looks like the one in the burst series. I was thinking that instead of having the beys spin on the metal, I could overlay the metal with the plastic that the official stadiums are made of. Does anyone know what kind of plastic it is? And if so where can I find it?
I don't know off of the top of my head, but if nobody knows, and you want to you can figure it out yourself. if oyu have an old Hasbro stadium or any beat up one that's practically unusable cut out a large section of it that's about a square, and then calculate the density, and google what kind of plastic has that density.
Packaging says ABS as far as I can remember. What sort of ABS exactly, who knows.
In addition, the anime stadia look less like metal and more like carbon fibre with electro-luminescent wire to me.
Here is someone who just tried reproducing those Burst anime stadiums: