"Workpieces " CNS Standards List |
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CNS 4685
2022 Edition 60 degree Center Holes for Big Workpieces (Forms A,B and C) 大工作件用中心孔（６０ ，Ａ型、Ｂ型及Ｃ型） |
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CNS 4685
2020 Edition 60 degree Center Holes for Big Workpieces (Forms A,B and C) 大工作件用中心孔（６０ ，Ａ型、Ｂ型及Ｃ型） |
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