tailieunhanh - Standard specification for carbon steel tee rails

This standard is issued under the fixed designation A1; 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 superscript epsilon indicates an editorial change since the last revision or reapproval. |

TÀI LIỆU LIÊN QUAN