1946   Establishment of Siebau   Siegener Stahlbauten GmbH   on 11 May, 1946 as a subsidiary   of Siegener AG
	1951   Start of manufacture of medium-   sized warehouse buildings and   similar constructions.  1954    Take-over of Ceno manufacture   under licence: round bar-room   trusses
	1955   Market launch of the first   “Lilibox” garage, the successor   to the corrugated iron garage,   sale price DM 750.
	1959    Start of manufacture of garage   swing doors, sale price   ex-works DM 320. Used in steel   garages, but also in garages of   all kinds.
	1965    New production line for   manufacture of fully galvanized   swing doors
	1966    Installation of a colour coating   plant for swing doors
	1966    Partial move to the new office   buildings in Heesstraße
	1980/81    Take-over by Hoesch AG and   incorporation into Hoesch   Siegerlandwerke.

An overview of the past 25 years:

1982  Transformation of SIEBAU into a GmbH & Co. KG

1986  Comprehensive expansion of the old warehouse stock

1988  Supplementation of the product range with industrial gates

1990  Range expanded with material-container sector

1991  Expansion of the new sales organisation in the new Federal States

1992  Merger of the groups Krupp und Hoesch, SIEBAU is in the Novoferm group (Krupp-Hoesch)

1994  Establishment of the subsidiary SIEBAU Lager- und Umwelttechnik (storage and environmental technology)

1995  Inclusion of the doors and frames product sectors. New manufacturing and assembly line.

1996  Certification in accordance with DIN ISO 9001

1999  Commissioning of the new powder coating plant

2000  New, comprehensive product presentation on the Internet

2003  Take-over of Novoferm group by Sanwa Shutter

2006  Establishment of SIEBAU Raumsysteme GmbH

2008  Take-over by private owners under the name SIEBAU Raumsysteme GmbH & Co. KG.