8074| 6
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冷拉鋼與A3鋼有什么區(qū)別,? |
評(píng)分
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點(diǎn)評(píng)
有10mm厚的冷軋板嗎,?
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點(diǎn)評(píng)
以前經(jīng)常用冷拉扁鋼,,目的就是不用加工,。
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