Need Used Rails R50/R65, 12,5m length

We need Used Rails R50 / R65, no serious corrosion or heavy rust spot, 12,5m length, chemical index of the Used Rails:
C: 0,54-0,82%
Si: 0,18-0,40%
Mn: 0,60-1,05%
S: 0,04%
P: 0,035% max
As: 0,01%max
300000 mt; 600000 mt monthly, 1-5 year contract, in bulk ship, CIF Chinese Lanshan Port or Chinese Tianjin Port.
Executive Standard of Products: R50 GOST 7173-75, R65 GOST 8165-75
Target price $175pmt Commission.
Payment: firm after inspection at discharge port we pay once every 15 days by TT repeatedly till is paid off. No advance payment is acceptable and any form of LC at first. ICPO in hand. If acceptable confirm please with detailed SCO.