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
F22B37/142—Supply mains, e.g. rising mains, down-comers, in connection with water tubes involving horizontally-or helically-disposed water tubes, e.g. walls built-up from horizontal or helical tubes
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Mechanical Engineering
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General Engineering & Computer Science
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Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses
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