CPC Subgroup
F22B 21/34 built-up from water tubes grouped in panel form surrounding the combustion chamber, i.e. radiation boilers
Full Title
Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically > built-up from water tubes grouped in panel form surrounding the combustion chamber, i.e. radiation boilers
5 direct subcodes
Child Classifications
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- F22B 21/36 involving an upper drum or headers mounted at the top of the combustion chamber
- F22B 21/38 Component parts thereof, e.g. prefabricated panels