DIN EN ISO 28763:2019-12 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
2019DIN EN ISO 28763:2019-12 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
2019DIN EN ISO 28763:2019 Vitreous and porcelain enamels - Regenerative, enamelled and packed panels for air-gas and gas-gas heat exchangers - Specifications (ISO 28763:2019)
2011DIN EN ISO 28763:2011 Vitreous and porcelain enamels - Regenerative, enamelled and packed panels for air-gas and gas-gas heat exchangers - Specifications (ISO 28763:2008); German version EN ISO 28763:2011