Stainless steel wash hand basin - has enamelled inside surface with non-enamelled section linked electrically to metal piece more base than iron

摘要

The stainless steel sink is coated with enamel with a discharge pipe at the bottom. The inside surface of the sink (1) is coated with the enamel (3) and the discharge pipe at the bottom is made with a number of projections extending above the enamel. The inside surface of the discharge pipe (2) is also enamelled. The unenamelled stainless steel section of the sink is electrically linked to a piece of metal which is more of a base metal than iron. The piece of metal is under the transition between the unenamelled and enamelled steel, but above any stopcock.