Gas-fired central heating boilers. Type B$d1$d1 and B$d1$d1$dB$dS boilers fitted with atmospheric burners of nominal heat input not exceeding 70 kW— 140 стр.
Plastics - Extruded and/or calendered, non-reinforced film and sheeting made of plasticized poly(vinyl chloride) (PVC-P) - Guidance for characterisation and designation
