6. Protective materials

6.1 Manufacturing processes

• Galvanizing

  Obtained by immersion in a bath of molten zinc or by electrolysis, galvanizing is used to protect steel pipes used to transport drinking water. This means that brazing must be used to weld these pipes.

• Chrome

  Highly resistant to corrosion and offering a good-quality finish, it is used by electrolysis or case-hardening processes in the manufacture of most valves and fittings.

• Enamel

  Generally composed of silica sand, potash, soda and coloring metal oxides, it is the most common coating used on sanitaryware. It is produced during...