Abstract: A container assembly for transporting bulk materials that includes a molded, one-piece completely integral non-metallic container insert and a frame supporting the container insert. The container insert can be molded of polyolefin. It can include walls having varying thicknesses, a bottom wall having a thickness greater than the side walls, and/or reinforcing structures molded within the walls. The container assembly can be constructed to provide a substantially enclosed tank, a roll-off container, intermodal container, fixed truck box, or dump truck box.

Abstract: An intermodal container having a non-metallic tuner receptacle in an external frame, where the inner receptacle has a bottom wall and side walls formed of a one-piece, completely integral sheet.