
Specification for H-section steel arches for use in mines.
NORMA vydaná dňa 11.12.1970
Designation standards: BS 227:1970
Note: NEPLATNÁ
Publication date standards: 11.12.1970
The number of pages: 24
Approximate weight : 72 g (0.16 lbs)
Country: British technical standard
Kategória: Technické normy BS