The company was founded in 1898 as Waggonfabrik Uerdingen AG in Uerdingen and produced rail vehicles under the brand DÜWAG. After the merger with Düsseldorfer Waggonfabrik in 1935, railway vehicles were built in Uerdingen, while the Düsseldorf plant produced mainly local traffic vehicles, namely tramway and light rail vehicles. In 1981, the company changed its name from Waggonfabrik Uerdingen AG to Duewag AG and began to use the Duewag spelling.
Duewag was sold to Siemens in 1989 by Talbot from 1996 Siemens began to consolidate its rail vehicle production facilities and the division was subsequently absorbed in 2000 now producing Siemens Combino vehicles. In 2002 a new 6000m² entrance/office building was built at the plant. The last tramcar to be manufactured at Uerdingen was in 2012 with production of the new Avenio model moving to Vienna however commuter and high speed vehicle production remains at the plant.
- Uerdingen railbus
- Buffel (DM'90)
- GT8 tramcar in various versions
- GT6 tramcar in various versions
- TW 400
- TW 6000 Stadtbahn car (Hanover)
- Stadtbahnwagen B
- Y-trains Delivered about 100 trains, to local railways in Denmark, between years : 1965-1983
- DSB Class MR/MRD DMU's
- Hong Kong Light Rail Phase 1 (Comeng), Phase 2 (Kawasaki) and Phase 3 (A.Goninan) Train Bogie