Buderus is a German company in the sector of the Smelting technique with the principal seat with Wetzlar. It was founded in 1731. Meanwhile, it belongs to the European large companies oldest. Buderus AG releases a turnover of approximately 2 billion Euros. After the regrouping with Robert Bosch GMBH, they form BBT (Bosch-Buderus-Thermotechnik GMBH) in 2003, with the principal seat with Wetzlar. Work of refined steel of Buderus AG was separate 2005 by Robert Bosch GMBH. grouping of companies to the Böhler-Uddeholm.