1894   Foundation of the company Stöckel & Petrie in Leipzig as machine factory for compressed air vessels, kettles and steam boilers 1910   The sons Arthur, Willy and Arno Stöckel continue to manage the company after the death of the founder 1921   Trading under the company name as “Gebrüder Stöckel Maschinenfabrik” (Stöckel Brothers Machine Factory). Manufacturing and renting of wheeled mobile boilers (one-pass fire tube boilers) with coal firing 1953   Due to the threat of expropriation and the political circumstances in the former GDR the owners fled to West Germany. In Darmstadt they started a new business with steam boiler rental 1963   Purchase of special finned water pipe boilers (12.5 t/h, 32 bar), which can also be equipped with superheaters (380°C) 1966   Death of the last of the three brothers Stöckel and continuation of the business by Rolf Taupitz and Thomas Stöckel 1972   Purchase of the first three-pass fire tube boilers (8 t/h, 24 bar) 1978   Dr. Thomas Stöckel is appointed as Managing Director 1986   Expansion of the rental fleet by means of three-pass boilers up to 14 t/h, 16 bar 1997   Purchase of the first double fire tube boilers (28 t/h, 19 bar), which can also be equipped with superheaters (320°C) 1998   Realisation of the largest rental business so far (80 t/h saturated steam, 12 bar, with combined oil/gas firing) 2001   Mobile containerized installations up to 6.8 t/h and 5.8 MW available 2002   Total thermal power of all rental boilers exceeds 350 MW 2004   Stöckel steam boilers for rent in Ireland, Sweden, Poland, Czech Republic, Slovenia, Cyprus, Switzerland and France 2007   Containerized units up to 22 t/h (superheated steam 250 °C) 2011   Three pass boilers for saturated steam (16 t/h, 19 bar) and hot water (11 MW, 200 °C) with optional super heater 300 °C and economiser 2012   Total thermal power of all rental boilers exceeds 435 MW