55Cr3-质优弹性好的弹簧钢55Cr3
60SiCr7-质优弹性好的弹簧钢60SiCr7
51MnV7-质优弹性好的弹簧钢51MnV7
60SiMn5 -质优弹性好的弹簧钢60SiMn5
质优46Cr2-冷镦钢和冷挤压钢46Cr2
质优38Cr2-冷镦钢和冷挤压钢38Cr2
质优46Cr1-冷镦钢和冷挤压钢46Cr1
质优38Cr1-冷镦钢和冷挤压钢38Cr1
钨铜板85钨铜管90钨铜进口钨铜
10SPb20提高切削速度,延长刀寿命的易切削结构钢10SPb20