Vitreous and porcelain enamels - Regenerative, enamelled and packed panels for air-gas and gas-gas heat exchangers - Specifications (ISO/DIS 28763:2018); German and English version prEN ISO 28763:2018
Vitreous and porcelain enamels - Regenerative, enamelled and packed panels for air-gas and gas-gas heat exchangers - Specifications (ISO 28763:2019); German version EN ISO 28763:2019— 17 стр.