GB
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中华人民共和国国家标准
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
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GB/T 8-1988
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Square head bolts--Product grade C 方头螺栓 C级 |
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Issued Date:1988-06-24 |
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Implemented Date:1989-07-01 |
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Issued by: |
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The Standardization Administration of the People's Republic of China |
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