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GBT 1298-2008 碳素工具钢

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GB\T 1298-2008 碳素工具钢

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Page 1: GBT 1298-2008 碳素工具钢

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Page 2: GBT 1298-2008 碳素工具钢

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Page 3: GBT 1298-2008 碳素工具钢

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Page 14: GBT 1298-2008 碳素工具钢

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