Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
F28F21/088—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal for domestic or space-heating systems