弹簧钢圆棒【60si2mn弹簧钢】宝钢弹簧钢【60si2mn锰钢片】半硬锰钢片【全硬60si2mn钢带】汽车弹簧钢//弹簧钢板【常用弹簧钢】全硬发蓝弹簧钢带【半硬银白色弹簧钢带】全硬火红色弹簧钢带【高精度弹簧钢带】60si2mn弹簧钢圆棒//弹簧钢带材，热处理弹簧钢【淬火弹簧钢带】光亮弹簧钢板【可折弯弹簧钢带】耐疲劳抗弯弹簧钢带牌号:60si2mn材料标准:GB/T1222-1984化学成分:C:0.56-0.64Si:1.50-2.00Mn:0.60-0.90P