NA 060
DIN Standards Committee Mechanical Engineering
DIN 21631 [CURRENT] referenced in following documents:
| Document number | Edition | Title |
|---|---|---|
| DIN 21632 | 2011-03 | Air regulating systems for mining - Wing air doors for haulage tracks - One-wing type air doors without pressure reduction More |
| DIN 21633 | 2011-03 | Air regulating systems for mining - Wing air doors for haulage tracks - Double-wing type doors without pressure reduction More |
| DIN 21634 | 2011-03 | Air regulation systems for mining - Swinging roadway air doors for haulage tracks More |
