BS 227:1926

Steel arches for use in mines (straight sided and horse-shoe arches).

NORMA vydaná dňa 6.5.1926

The information about the standard:

Designation standards: BS 227:1926
Note: NEPLATNÁ
Publication date standards: 6.5.1926
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategória: Technické normy BS