STN 446250 (446250)

Mine ventilation. Plastic air ducts, rigid type

STANDARD published on 1.9.1974

The information about the standard:

Designation standards: STN 446250
Classification mark: 446250
Catalog number: 63533
Note: WITHDRAWN
Publication date standards: 1.9.1974
Approximate weight : 18 g (0.04 lbs)
Country: Slovak technical standard
Category: Technical standards STN