发布时间:2025-01-24 04:53:31
镀锌管实际上就是将钢管镀锌,为的是提高钢管的耐腐蚀性。镀锌管分为电镀锌管和热镀锌管。相比之下,热镀锌管的耐腐蚀性比电镀锌管强很多。因为热镀锌管的镀锌层比较厚。镀锌管主要用作煤气和暖气管,而不宜用作水管,而电镀锌成本低,表面不是很光滑,其本身的耐腐蚀性比热镀锌管差很多。镀锌钢管重量计算公式:[(外径-壁厚)壁厚]0.02466=kg/米(每米的重量)。
关于电缆线品名的含义 zrkvvp2223x15平方 哪位能告诉我以上电缆线各字母含义
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