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Air regulation systems in mining - Wing air locks for travelling tracks - Double-wing type doors with pressure reduction.
STANDARD published on 1.5.1999
Designation standards: DIN 21638:1999-05
Note: WITHDRAWN
Publication date standards: 1.5.1999
SKU: NS-190785
The number of pages: 5
Approximate weight : 15 g (0.03 lbs)
Country: German technical standard
Category: Technical standards DIN
Wetterbauwerke für den Bergbau - Flügeltüren für den Fahrweg - Druckentlastete zweiflügelige Wettertüren.
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