Действащ
This European Standard specifies trivalent chromium based chemical conversion coatings for aluminium and aluminium alloys. It covers the application by bath but also by touch-up. It doesn’t give complete in house process instructions; these shall be given in the manufacturers detailed process instructions.
ДЕЙСТВАЩ
БДС EN 4729:2018
60.60
Публикуван стандарт
15.03.2018 г.