For a while, both Siemens and Westinghouse gas turbine models were offered in the 60 Hz markets worldwide, while the 50 Hz markets were served by existing Siemens products. After some time, it was decided that the Westinghouse designs would be the primary basis of the Siemens offerings for all 60 Hz markets (most of the Americas, S. Korea, Saudi Arabia), served by Siemens-Westinghouse staff in Orlando, would be the Westinghouse designs (e.g., the W501F, a.k.a. SGT6-5000F). The 50 Hz markets (covering Europe, Africa, most of Asia and part of South America) was served by Siemens in Germany.