Under reference 2241 from manufacturer MARKLIN, unballasted curved rail with an angle of 30° and a radius of553.9 mm in current alternating 3 rails,with realistic profiles and finely reproduced sleepers.
Curved rail to scale HO 1/87th, code 83, for trackK.
The K track can be integrated into an old track M layout using the MARKLIN transition rail reference 2291.
transition track MARKLINreference 24922 allows the K channel to be combined with the C channel.
For planning your miniature layout MARKLIN offers its track layout software under reference 60521.