SS SSP(鍍硬鉻產品電鍍厚度t 33μm)
QD51(SUS440C同等產品)
HR HRC 56
g6 h5
3,4,5,6,8,10,12,13,15,16,20,25,30,35,40,50
蓉公網安備 51012402000290號