???? ????? ???? ????? ???? ???????? ???? ???? Wuhan Iron and Steel Co., Ltd. ?-Panzhihua Iron and Steel Co., Ltd ???? ?? ??????? ??????? ????? ???? ?????, ????? ????? ???? ?????? ??? ????? ??? ?????? ??? 30%-40% ???? 2.0 ???? ????? ?????? ??? 2.0 ??? 40%-48%, ???????? ???????? ?? ????? ???? ??? ?????? ?????.

??????? ????? ????? ?????, ????? ???, ????? ????? ?????? ?? ??????? ?????, ?????? ??? ???? ?? HRC60, ?????? ????? ?????? ????? ???????, ??? ?????? ?? ?? 3-5 ??? ?? ??????? ?????? ?????? ??????? ????? ???????, ?????? ?????? ?????? ????? ????? ??? ??????, ???? ???? ?????, ????? ?????? ????? ??? ????? ?? ????? ?????? ?????? ?? ??????? ?? ???? ????? ????? ?-HRC58-HRC62; ????? ??????, ?????? ?? ????? ???-????? ???? ??? ?????? ??? ≤ HRC32 ?? ??????? ?????? ?? ???? ???, ?????? ????? ?????? ?? ?? ??? (?? ?????) ????? ??????? ???? 5g, ?? ?????? ????? ??? ?? ?????? ??????; ???????.