The difference of P50 and R50 rail

P50 is Chinese standard (GB) rail, R50 is Russian standard (GOST) rail, they are similar rail, but has a little different. Please check and compare both of the drawing:

Normally we only have stock of P50 rail, if you need R50 rail, we need make the roller to produce it, the MOQ should more than 3000 tons.

Please refer some requirement of P50:

• Requested is 3000 Tone Rails for Metro.
• Type:  R-50;
• should be made at least 2018 yr.
• all quantities should be made with one factory;
• Rails should meet:  GOST R 51685-2000 or GOST 7174-75 or GOST 24182-80 or DSTU-4344-2004 or GOST 51685-2013 or their equivalent standard.
• The steel used for the rails may be made of marten or oxygen-converting or electric furnace:  M-74-T or M-74-Ф or K-74-T or K-74-Ф or K-76. Ф or Э76Ф or a mark corresponding to their equivalent standard;
• The standard length of the Rail should be 25 meter;
• Rail should be without any defects;
• Marking: All rails should be marked according to the relevant standard in relief by the hot tip method ( Year and month of production in Roman numerals);
• Engraving should be done on the rails side, that not to damage or deform the rails.

Mandatory Request is:

I Should have Official Document or Passport from Manufacturer that Rails which I have is according one of the –  “GOST R 51685-2000 or GOST 7174-75 or GOST 24182-80 or DSTU-4344-2004 or GOST 51685-2013” or their equivalent standard.