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Auxiliary ventilation in mining is always necessary when underground working places are not connected to the main air current. This standard applies to connecting pieces to be used for the connection of ventilation equipment with flange joints to flexible plastic air ducts.
| Author | DIN |
|---|---|
| Editor | DIN |
| Document type | Standard |
| Format | File |
| ICS | 73.100.20 : Ventilation, air-conditioning and illumination equipment
|
| Number of pages | 6 |
| Replace | DIN 21613 (1990-07) |
| Year | 2009 |
| Document history | DIN 21613 (2009-10) |
| Country | Germany |
| Keyword | 21613 |