Foundation of the company by Johann Schlüsselbauer Sr. in Pennewang.
Beginning of the production of moulds for the precast industry.
Construction of handling-systems for concrete pipes and manholes.
Innovation with the MAGIC 402, a concrete pipe making machine with twice the capacity as usual.
Launch of the first EXACT machine. From now on spigots can be made in so far unkown quality.
Expansion of the productionfacilities by 2.000 m² to 10.000 m² in total.
Designaward from IF Hannover „ Best of industrial sector ".
Launch of the Exact 2500 machine. The first fully automated pipe and manhole production plant including a quick mould change system.
The revelation of PERFECT, the unique way of manufacturing individual and monolithic manhole bases.
Foundation of SCHLÜSSELBAUER USA in Nashville, Tennessee.
Expansion of the production facilities to 15.000 m² in total.
Grand Opening of a state of the art GEOCELL foam glass factory in Knittlingen, Germany.
Achieving highest output by using kiln technology from Schluesselbauer.
PERFECT PIPE combines permanent corrosion protection and statical loadability to meet all requirements of durable sewerage systems.