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F22B21/00—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically
F22B21/34—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
F22B21/346—Horizontal radiation boilers
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ES0304257A1964-08-311964-09-16Caldera multitubular para la producciën de vapor saturado o recalentado
ExpiredES304257A1
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Werkwijze voor de vervaardiging van een pijp, warmtewisselaar of stoomketel, geheel of grotendeels bestaande uit een ijzerlegering met een geheel ferritische structuur.