Used rails, 50,000 mt/month, 1 year contract

I am looking for following named products:
Commodity: used rails
Specifications: r-50: 51.67 kg/m – gost-7173-75 or r-65: 64.72 kg/m – gost-8165-75 cut: cut in 1.5 meters
Quantity:  50,000 mt/month (1 year contract)
Destination port: Shanghai, China
Payment terms: irrevocable mt-700 issuance non-transferable and divisible against 20% performance bond, payable at discharge port after sgs inspection within 24 hours to sellers account. The consignment title and risk changes from seller to buyer upon seller getting 100% payment. Buyer’s letter of credit mt-700 issuing bank will be credit suisse (shweiz) ag.