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