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螺旋风管主要用于联通两地之间的空气流通,起到通风透气的作用。目前市面上使用广泛的就是螺旋风管。它是用金属带料卷制成螺旋形咬缝的薄壁管,圆形,无焊接,不漏水,不漏气,多用于送风和散装物料输送,代替传统的白铁管。螺旋风管市场按照材质一般分为三类:镀锌螺旋风管、不锈钢螺旋风管以及复合螺旋风管。其中不锈钢风管的质量.好,适应性强,但是价格高。目前市场上广泛应用的是镀锌螺旋风管。镀锌螺旋风管基本拥有不锈钢风管的特性,而且价格相对而言只是不锈钢的三分之二甚至更低。复合螺旋风管一般应用在外界环境较为普通,对风管要求不太高的场所。由于铁皮容易在各种环境下发生化学反应,造成腐蚀、生锈。而锌在干燥的空气中几乎不发生变化。在潮湿的空气中,锌表面会生成致密的碱式碳酸锌膜。螺旋风管主要在风管铁皮上镀一层锌,对铁皮起到保护作用。镀锌层经过钝化处理、染色或涂覆护光剂后,能显着提高其防护性和装饰性。
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