Hello Friend,
I think the following links will help in getting the basic idea of steel industries business process.
Generally there are two methods used in making steel Basic Oxygen furnace (BCF) and Electric Arc Furnace (EAF)
Following link provides some details on this process
http://www.worldsteel.org/dms/internetDocumentList/bookshop/Steelmaking-poster/document/Overview%20o...
Steel mill - Wikipedia, the free encyclopedia
you can see this video to get more idea on the steel making
http://scn.sap.com/community/mining-and-mill-products/blog/2012/12/10/steel-from-start-to-finish
Further you can use SAP Best practice material to get an idea on how map these process into SAP
SAP Best Practices Package for Fabricated Metals U.S.
Hope it would be helpful!
Regards,
Pratik
