AURESTIQUE,Used Rails R50 / R65 Parameter,Reference value R50,GOST 7173-75 R65,GOST 8165-75 Important context,"The source identifies this product but does not provide a complete chemical or dimensional specification. Request the current technical sheet, lot analysis and inspection terms. No unverified dimensions or composition are assumed." Source,SCRAP_MIX_CLEANED_FINAL.pdf · pp. 1–2 Disclaimer,"Subject to availability, supplier confirmation, due diligence, contractual agreement and current market conditions."