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圓鋼

合金結構鋼

品種:20#熱軋圓鋼坯

規格:Φ50mm-Φ180mm

品種:45#優質碳素結構鋼 40Cr/27SIMn/37Mn5等合金結構鋼

規格:Φ16mm-Φ180mm

銷售熱線:400-8760-678

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