
EN 1151 PUMPS - ROTODYNAMIC PUMPS - CIRCULATION PUMPS HAVING AN ELECTRICAL EFFECT NOT EXCEEDING 200 W FOR HEATING INSTALLATIONS & DOMESTIC HOT WATER INSTALLATIONS - REQUIREMENTS, TESTING MARKING
出版:British Standards Institution

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EN 1151 PUMPS - ROTODYNAMIC PUMPS - CIRCULATION PUMPS HAVING AN ELECTRICAL EFFECT NOT EXCEEDING 200 W FOR HEATING INSTALLATIONS & DOMESTIC HOT WATER INSTALLATIONS - REQUIREMENTS, TESTING MARKING
出版:British Standards Institution
專家解讀視頻