Metal scrap, Auto scrap, rail track scrap

I am looking to buy Metal scrap only (no plastic), especially interested in rail track scrap. But no signle pease should be more than 4 1/2 feet long. For auto scraps, any part scraped, if body is included it must be pressed to make bundle. Any pieces of steel, iron or aluminum with lenght no more than 4 1/2'. Supplier should be able to ship to Port Qasim (Karachi, Pakistan). Please contact me with details and prices for 20' container.