| 1963-1980 | manufacturing of piping and filters for environmental engineering | |
| 1980 | foundation of Air System Barlage GmbH | |
| since | 1983 | production of components for power stations, filters and dedusting systems |
| 1987 | expansion of the production site at Flechum- Germany | |
| 1987-1997 | production of components for power stations | |
| 1995 | new production hall for vessels at Flechum- Germany | |
| 1999 | expansion of production capacity for stainless steel at Flechum- Germany | |
| 2005 | expansion of production capacity for extreme large apparatus | |
| 2007 | change of name Air System Barlage to Barlage GmbH | |
| 2008 | expansion of production capacity for extreme large apparatus at the Eurohafen (port) Germany | |
| 2014 | expansion of production capacity with modern clean room facility at Flechum- Germany | |