关于型材方面,相当不错,PDF 高清晰!Standard Specification forGeneral Requirements for Rolled Structural Steel Bars,Plates, Shapes, and Sheet Piling1This standard is issued under the fixed designation A 6/A 6M; the number immediately following the designation indicates the year of
Standard Specification for
General Requirements for Rolled Structural Steel Bars,
Plates, Shapes, and Sheet Piling1
This standard is issued under the fixed designation A 6/A 6M; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
