易切削结构钢SUM21 SUM22 SUM22L SUM23 SUM23L SUM24L SUM25 SUM31 SUM31L SUM32 SUM41 SUM42 SUM43…………
冷镦钢SWRCH22K SWRCH24K SWRCH25K SWRCH27K SWRCH30K SWRCH33K SWRCH35K SWRCH38K SWRCH40K SWRCH41K SWRCH43K SWRCH45K SWRCH48K SWRCH50K…………
螺栓用钢 SNB5 SNB7 SNB16 SNB21-1 SNB21-2 SNB21-3 SNB21-4 SNB21-5 SNB22-1 SNB22-2 SNB22-3 SNB22-4 SNB22-5 SNB23-1 SNB23-2 SNB23-3 SNB23-4……………
弹簧钢SUP7 SUP9 SUP9A SUP10 SUP11A SUP12 SUP13 S50C-CSP S55C-CSP S60C-CSP S65C-CSP S70C-CSP SD5-CSP SK4-CSP SUP10-CSP………