
Specification for percussive rock-drilling bits, rods and stems. Integral stems.
NORMA vydaná dňa 28.3.1969
Designation standards: BS 4441-2:1969
Note: NEPLATNÁ
Publication date standards: 28.3.1969
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategória: Technické normy BS