Looking to buy Scrap Used Rail Tracks in bulk quantities of 250,000 tons per month

Looking for regular supply of R50/R65 Used/Scrap Rail Tracks of 250,000 tons per month for a minimum of 12 months (3,000,000 tons per year).  

Please inform the following:

1.  How long your company has been in business, including annual material turnover quantity (metric tons sold per year).
2.  Availability of material and the ability to meet this requirements.

3.  Rate per ton & logistic details
4.  Payment Terms