Vitreous and porcelain enamels - Determination of resistance to chemical corrosion - Part 3: Determination of resistance to chemical corrosion by alkaline liquids using a hexagonal vessel or a tetragonal glass bottle (ISO 28706-3:2017); German version EN ISO 28706-3:2018
Edition 2018-04

Vitreous and porcelain enamels - Determination of resistance to chemical corrosion - Part 4: Determination of resistance to chemical corrosion by alkaline liquids using a cylindrical vessel (ISO 28706-4:2016); German version EN ISO 28706-4:2016
Edition 2016-07

Vitreous and porcelain enamels - Determination of resistance to chemical corrosion - Part 5: Determination of resistance to chemical corrosion in closed systems (ISO 28706-5:2010); German version EN ISO 28706-5:2011
Edition 2011-09

Vitreous and porcelain enamels - Glass-lined apparatus for process plants - Part 1: Quality requirements for apparatus, components, appliances and accessories (ISO 28721-1:2019); German version EN ISO 28721-1:2019
Edition 2020-01

Vitreous and porcelain enamels - Glass-lined apparatus for process plants - Part 2: Designation and specification of resistance to chemical attack and thermal shock (ISO/DIS 28721-2:2023); German and English version prEN ISO 28721-2:2023
Edition 2023-11

Vitreous and porcelain enamels - Glass-lined apparatus for process plants - Part 2: Designation and specification of resistance to chemical attack and thermal shock (ISO 28721-2:2015); German version EN ISO 28721-2:2015
Edition 2016-06

Vitreous and porcelain enamels - Glass-lined apparatus for process plants - Part 3: Thermal shock resistance (ISO 28721-3:2008); German version EN ISO 28721-3:2011
Edition 2011-06

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 28721-4:2015); German version EN ISO 28721-4:2015
Edition 2016-03

Vitreous and porcelain enamels - Glass-lined apparatus for process plants - Part 5: Presentation and characterisation of defects (ISO 28721-5:2016); German version EN ISO 28721-5:2016
Edition 2016-10

Vitreous and porcelain enamels - Characteristics of enamel coatings applied to steel panels intended for architecture (ISO 28722:2008); German version EN ISO 28722:2011
Edition 2011-06