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请大家看看这钢管表面是不是脱碳层?10#钢 500X |
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发表于 2017-10-14 21:10:51
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热处理之家,我爱我家
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发表于 2017-10-16 11:22:26
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热处理之家,我爱我家
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发表于 2017-10-16 12:12:26
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