
VITREOUS AND PORCELAIN ENAMELS - GLASS-LINED APPARATUS FOR PROCESS PLANTS - PART 4: QUALITY REQUIREMENTS FOR GLASS-LINED FLANGED STEEL PIPES AND FLANGED STEEL FITTINGS (ISO 28721-4:2010)
出版:Comite Europeen de Normalisation

专家解读视频
VITREOUS AND PORCELAIN ENAMELS - GLASS-LINED APPARATUS FOR PROCESS PLANTS - PART 4: QUALITY REQUIREMENTS FOR GLASS-LINED FLANGED STEEL PIPES AND FLANGED STEEL FITTINGS (ISO 28721-4:2010)
出版:Comite Europeen de Normalisation
专家解读视频