SK正常直的边缘等效于JISA等级，未淬火，500mm 直边标准类型（A级） S-A500

Nominal dimensions (mm): 500
Length (mm): 500
Width (mm): 40
Straightness (μm): 20
Type: Non-hardened item
Shape: Normal type
Height (mm): 5
JIS grade: A grade equivalent
Nominal dimensions (mm): 500

主体：机械结构的碳钢

800G

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