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Publication of BE714926ApublicationCriticalpatent/BE714926A/xx
F22B37/00—Component parts or details of steam boilers
F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
F22B37/10—Water tubes; Accessories therefor
F22B37/14—Supply mains, e.g. rising mains, down-comers, in connection with water tubes
F22B37/141—Supply mains, e.g. rising mains, down-comers, in connection with water tubes involving vertically-disposed water tubes, e.g. walls built-up from vertical tubes