BS 5440-1:2008
Flueing and ventilation for gas appliances of rated input not exceeding 70 kW net (1st, 2nd and 3rd family gases). Specification for installation of gas appliances to chimneys and for maintenance of chimneys
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BS 5440-1:2008
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Flueing and ventilation for gas appliances of rated input not exceeding 70 kW net (1st, 2nd and 3rd family gases). Specification for installation of gas appliances to chimneys and for maintenance of chimneys
Количество страниц оригинала
122
Постоянная ссылка
https://www.standards.ru/document/6748713.aspx