Recently, during the construction, I met six three-grade steels for the first time. I didn't realize they were wires. At present, we are looking for "slimming" steel bars locally. According to the notice, the elongation does not exceed 3%. We took steel from the construction site for a second interview. There is no problem with the tensile strength, but the strength-yield ratio is unqualified. The specification requires that the section size of six steel bars should not exceed 4%! I hope it helps you!