北京快3走势图

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镀锌低碳钢管

北京快3走势图FABUSHIJIAN:2019-08-07 15:46:58

所属分类:镀锌碳钢管

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镀锌低碳钢管

  镀锌低碳钢管镀锌量很少,只有10-50g/m2,其本身的耐腐蚀性比热镀锌管相差很多。正规的镀锌管生产厂家,准用冷镀锌管作水、煤气管。 冷镀锌钢管镀锌层是电镀层,锌层与钢管基体独立分层。锌层较薄,锌层简单附着在钢管基体上,容易脱落。故其耐腐蚀性能差。在新建住宅中,禁止使用冷镀锌钢管作为给水钢管。

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