Acrylic Bathtub VS Fiberglass Bathtub. Both fiberglass bathtub and acrylic bathtub are the two most common bathtubs in the market. They are both molded plastic bathtubs. Acrylic bathtub has fiberglass in it, and fiberglass bathtub is made from more than just fiberglass.
Cold-formed steel (CFS) is the common term for products made by rolling or pressing steel into semi-finished or finished goods at relatively low temperatures (cold working).
How to Harden Steel. Steel is an alloy of iron used in construction, the manufacture of metal tools and other applications. In uses exposing it to a lot of wear and tear, the steel must be hardened and then tempered so it stands up to the level of usage it's intended for.