SF SFP(鍍硬鉻產(chǎn)品電鍍厚度t 33μm)
SUJ2
HR HRC 58
g6 h5
3,4,5,6,8,10,12,13,15,16,20,25,30,35,40,50
蓉公網(wǎng)安備 51012402000290號