BS 679:1989

Specification for filters, cover lenses and backing lenses for use during welding and similar operations.

NORMA vydaná dňa 30.6.1989

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The information about the standard:

Designation standards: BS 679:1989
Note: NEPLATNÁ
Publication date standards: 30.6.1989
The number of pages: 14
Approximate weight : 42 g (0.09 lbs)
Country: British technical standard
Kategória: Technické normy BS