This document provides details on PC steel bars, including their chemical composition, sizes available, applicable standards, and mechanical properties like tensile strength and elongation. PC steel bars have good properties for lap welding and heat forging, with low relaxation and comprehensive mechanical properties. They are mainly used in prestressed concrete applications like pipes, poles, sleepers, and viaduct piers. The bars are packaged in coils between 1000-1100kg that are strapped and wrapped to prevent rust.