DIFF Subgroup
F22B 7/08 inside the furnace tube in longitudinal arrangement
Introduced: September 1968
Full Title
Steam boilers of furnace-tube type, i.e. the combustion of fuel being performed inside one or more furnace tubes built-in in the boiler body > with auxiliary water tubes > inside the furnace tube in longitudinal arrangement
No child classifications to compare. This is a leaf node in both IPC and CPC.