Glass (vitreous) enamelled salt-glazed fireclay pipes.
NORMA vydaná dňa 23.5.1951
Designation standards: BS 540:1951
Note: NEPLATNÁ
Publication date standards: 23.5.1951
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategória: Technické normy BS