 Robert Garbe designed this 4-6-4 (2'C2') tank locomotive for 100 km/h with a 17-ton axle load and contracted the "Vulkan Werke" in Stettin to build it.It was given the designation T 18.A total of 534 engines were built from 1912 to 1927, mainly by the Stettiner Maschinenbau AG Vulcan and, from 1923, also by Henschel, of which 458 alone went to the Prussian state railways and, subsequently, the Deutsche Reichsbahn.