5. Sanitary products features

5.1 Definition. Classification

These are ceramic products for domestic use: toilet bowls, washbasins, bathtubs, showers, bidets, urinals, sinks, etc.

Broadly speaking, the materials used in sanitary appliances fall into two categories:

• Porcelain (sanitaryware porcelain and vitréous), which is a product with a compact, vitrified mass; vitrification results in vitreous fracture; it is defined by the average percentage of water absorbed;

• sanitary legrès, which is a product with a refractory mass, possibly with added grog, and a fracture with grains of varying sizes.

An enamel coating is applied to all or part of the surface of the appliance, which...