BS 679:1947

Protective filters for welding and other industrial operations..

NORMA vydaná dňa 12.9.1947

The information about the standard:

Designation standards: BS 679:1947
Note: NEPLATNÁ
Publication date standards: 12.9.1947
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategória: Technické normy BS