MGP
S45C(机械结构用碳钢)
硬质镀铬 厚度8~30t:≥10μm 镀层厚度31.5≤T:≥20μm
F8
6,8,10,12,14,15,16,18,20,22,22.4,25,28,30,31.5,32,35,35.5,36,40,45,50,55,56,60, 63,65,67,70,71,75,80,85,90,100
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