2021DIN EN ISO 6370-1:2021 Vitreous and porcelain enamels - Determination of the resistance to abrasion - Part 1: Abrasion testing apparatus (ISO 6370-1:1991); German version EN ISO 6370-1:2021
1995DIN ISO 6370-1:1995 Vitreous and porcelain enamels - Determination of the resistance to abrasion - Part 1: Abrasion testing apparatus; identical with ISO 6370-1:1991