GB500 17-2003 Code for Design of Steel Structures
GB50205-2007 Code for Acceptance of Construction Quality of Steel Structure Engineering
Many others.
Handbook of steel structure design
Handbook of light steel structure design
Steel structure-edited by Shen Zuyan?
Design and calculation of steel structure
Design and Calculation of Steel Structures (2nd Edition)
Example of steel structure design and calculation
I'll introduce you to an introductory textbook, Steel Structure.