For RRStW 23, look in
EN 10111 Coninuously hot-rolled low carbon steel sheet and strip for cold bending - Technical delivery conditions
or
DIN 1614-1 Steel flat products; hot rolled sheet and strip; technical delivery conditions; mild unalloyed steels for cold reducing
For RQSt 37-2, look in
EN 10025 Hot rolled products of non-alloy structural steels; technical delivery conditions
or
DIN 5512-1 Materials for rail vehicles - Steels - Part 1: Structural steels and structural steels with improved atmospheric corrosion resistance, hot rolled; selected standard
Regards,
Cory
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.