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C-1045 Steel 满足ASTM A148-01 grade 80-50,这是什么材料? |
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发表于 2006-9-26 13:03:40
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Re: C-1045 Steel 满足ASTM A148-01 grade 80-50,这是什么材料?
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发表于 2006-9-26 16:33:22
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Re: C-1045 Steel 满足ASTM A148-01 grade 80-50,这是什么材料?
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发表于 2008-6-2 15:02:46
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村料标准
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