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  • 302019-11

    热镀锌方矩管与无缝冷镀锌方管的区分

    无缝镀锌方矩管是一种可以经过冷轧、热轧两种不同的镀锌带钢或镀锌卷板为坯料经冷弯曲加工成型后再经高频焊接制成的方形截面形状尺寸的空心方形的截面型钢钢管。也可以将事先...

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