I present the check-rails from Code 70 nickel/silver.
I handmade them from the prototype. In HO: ca.44,828mm = 3900mm in prototype for a simple turnout 1: 9 R190.
These are used not only in steel-sleepers, but also in wooden-sleepers.

The prototype was found from the book "ΣΙΔΗΡΟΔΡΟΜΙΚΗ 1993" of Profillidis (Greece). The rail--profile is UIC50 on steel /and or wooden sleepers in a simple-turnout /or EW1: 9 R190.

Now, the Greek State Railways use in mainline-tracks, the rail-profile UIC60 on prestressed-concrete sleepers with fastenings SKL14 and also UIC60 on wooden sleepers and fastenings W12.

W12 on wooden sleepers, old-station Agios Dionysios Pireas, 18.01.2014

SKL14 on B70 - prestressed-concrete sleepers, ERGOSE practice, Northern Greece 07.08.2002
Also, the Greek State Railways use the rail-profiles: UIC54 & UIC60 on twin-block-sleepers and fastenings NABLA, when the sleepers are U31, and RN, when the sleepers are U3.

Twin-block sleepers U3 with fastenings RN & U31 with fastenings NABLA, ERGOSE practice, Northern Greece 07.08.2002
And in old tracks they still use S49 /oder UIC50 rail-profiles on steel-sleepers with fastenings "K" ("Κραπό" in Greek) & and wooden sleepers with fastenings "K" (Klemmplatte in German).

Fastening "K" on wooden "AZOBE" sleepers, ERGOSE practice Nortern Greece, 07.08.2002

Fastening "K" ("Κραπό" in Greek) on steel-sleepers, Acharnai station, April 2002
There are also on old tracks with rail-profile S49 on wooden-sleepers, french ''tire-fond'' ("τιρφόνια" in Greek).

französicher Befestigung "Tire-Fond" on "AZOBE" wooden-sleepers, Dekeleia station, 22.04.2015
Azobé-sleepers are sleepers from Azobé-tropical-wood.
Dimitris