It is a ready-bended, carrier profile used in curved suspended ceiling applications.
Product Standard: TS EN 14195
In Gypsum Board Suspended Ceiling Systems; It is the profile used in floor and ceiling in walled wall cladding systems.
In Gypsum Board Partition Systems, it is the profile applied horizontally.
Gypsum plasterboard is a horizontally applied carrier profile which is applied vertically in Gypsum Board and Wall Cladding Systems.