The powder melts and flows and hardens to a smooth, durable vitreous coating on metal, glass or ceramic. according to some sources, the word enamel comes from the high german word smelzan (to smelt) via the old french esmail. used as a noun, an enamel is a usually small decorative object,... 6.vitreous enamel panel for metro wall cladding panel china supplier ref78(id:10364444). view product details of 6.vitreous enamel panel for metro wall cladding panel china supplier ref78 from tangshan ruierfa new materials technology co.,ltd manufacturer in ec21 Vitreous enamel is specifically on a metal base. it is thus defined as a vitreous, glass-like coating fused on to a metallic base. in american english it is referred to as porcelain enamel. it should not be confused with paint, which is sometimes called u2018enamelu2019. paints cannot be u2026 Oct 17, 2019u00a0u00b7 porcelain enamel cookware refers to pots and pans made of metal that's coated with a form of glass called porcelain enamel, which is bonded to the iron, steel, stainless steel or aluminum metal to form the body of the cookware.