BS 227:1934

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

NORMA vydaná dňa 1.11.1937

The information about the standard:

Designation standards: BS 227:1934
Note: NEPLATNÁ
Publication date standards: 1.11.1937
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategória: Technické normy BS