Largest Steel Companies Ranked by sales in the fourth quarter of 1996. Also gives earnings, and earnings as a percentage of sales. American Iron and Steel Institute Has a lot of industry statistics, but they don't have much about specific companies. Has weekly raw-steel production figures. Virtual Steel Has industry information and company profiles of steel companies.
Some stuff here is free, but most of the information requires a subscription.
Offers detailed profiles of public and private steel companies, but it'll cost you. But there profiles appear to be quite detailed, and if you are in the steel industry, this might have what you need. Profiles of steel companies from around the world. Steel Industry Report Overview of the steel industry in the United States from the US Department of the Treasury. Includes statistics and tables.