In some special fileds, we often use special wheels for tanks . PU wheels for stainless cylinder , Metal wheels for hotted tanks ., etc.
We often choose the wheels material as Rubber , PU or 45# Steel .
By the way , in order to support heavy duty tanks , according to different situations ,we usually use set 2 or 3 pieces alined .
WR300 / 45# Metal wheels
WR100 / PU wheels
WR10 / Rubber with 2 metal wheels clamping