广东诚信销售70#钢材|冷拉直条|盘条————【汝特弹簧钢】————【弹簧钢】:65Mn 55SiMnVB 55Si2Mn 55Si2MnB 60Si2Mn合金轴承钢GCr15 GCr15SiMn GCr18Mo G20CrMo G20CrNiMo G20CrNi2Mo G20Cr2Ni4 9Cr18, <G.>9Cr18Mo 高速钢 SKS8 CR12 CR12MOV 4CR5MOSIV