The introduction of welding technology from 1933 onwards increasingly led to the Deutsche Reichsbahn no longer joining the components of its cars by rivets, but by welding. The advantage of welding technology was above all the weight savings, which could be used to increase the weight of the load. In order to meet the call for higher speeds in general cargo traffic, the DR developed the "Gs Oppeln" from 1936 onwards. Due to its 6000 mm wheelbase, its permissible maximum speed could be set at 90 km/h. In addition to the gusset plates that were omitted by welding technology, this type of wagon differed mainly in its pointed truss, which had become necessary due to the long axle base. The sharp increase in demand for freight wagons due to the war led to series production of the "Gs Oppeln" from 1938 onwards. In the following years, around 28,000 cars without and 6,100 cars with handbrakes were built. Many of the coaches were also equipped with steam or even electric heating and could therefore be used as general cargo wagons in express and express trains without any problems. With the end of the Second World War, the wagons were spread all over Europe and could be found, for example, at the railway administrations of Austria, Czechoslovakia, Poland or Belgium. The reorganization of the vehicle numbers of the young Deutsche Bundesbahn led to the "Gs Oppeln" becoming the "Gms 30" in the early 1950s. Some of the cars even came into the EUROP fleet and thus became internationally operational. With the advent of the first new freight wagons towards the end of the 1950s, the decision was made against an expensive full refurbishment. The remaining cars were renumbered as "Glms 200" with the introduction of the UIC numbering system and survived until 1979.
