A tube sheet is a plate, sheet, or bulkhead which is perforated with a pattern of holes
designed to accept pipes or tubes. These sheets are used to support and isolate tubes
in heat exchangers and boilers or to support filter elements. Depending on the application,
a tube sheet may be made of various metals or of resin composites or plastic.
A sheet tube may be covered in a cladding material which serves as a corrosion barrier
and insulator and may also be fitted with a galvanic anode. Tube sheets may be used in
pairs in heat exchange applications or singularly when supporting elements in a filter.