At present, spiral duct is the most widely used in the market. But what kinds of spiral catheters are there?

　　螺旋风管市场按材质一般分为三类安徽泵:镀锌螺旋风管、不锈钢螺旋风管和复合螺旋风管。其中，不锈钢风管质量好，适用性强，但价格较高。目前市场上流通广泛的螺旋管是镀锌板。镀锌钢螺旋管的基本特点是基本不锈钢螺旋管，但价格仅为不锈钢螺旋管的三分之二或更低。复合式螺旋风管一般用于外部环境较为常见，对风管的要求不太高。由于铁容易在各种环境中发生生化反应，导致腐蚀、生锈。另一方面，锌在干燥的空气中变化不大。在潮湿的空气中，锌表面会形成致密的碱性碳酸锌膜。螺旋风管主要是在风管铁板上涂一层锌，以保护铁板。通过钝化、着色或涂上保护剂，可显著提高锌镀层的保护和装饰性能。

　　The spiral duct market is generally divided into three types of Anhui pumps according to the material: galvanized spiral duct, stainless steel spiral duct and composite spiral duct. Among them, stainless steel air duct has the best quality and strong applicability, but the price is higher. At present, galvanized sheet is the most widely circulated spiral tube in the market. The basic characteristic of galvanized steel spiral pipe is basic stainless steel spiral pipe, but the price is only two-thirds or lower of stainless steel spiral pipe. Compound spiral duct is commonly used in external environment, and the requirement for the duct is not too high. As iron is prone to biochemical reactions in various environments, it leads to corrosion and rust. On the other hand, zinc does not change much in dry air. In moist air, a dense alkaline zinc carbonate film is formed on the surface of zinc. The spiral air duct is mainly coated with zinc on the iron plate of the air duct to protect the iron plate. The protective and decorative properties of zinc coating can be significantly improved by passivation, coloring or coating with protective agent.

　　山东通风管道制造企业生产的螺旋风管具有以下特点:

　　The spiral air duct produced by Shandong Ventilation Pipeline Manufacturing Enterprise has the following characteristics:

　　外观光滑，无锌瘤，毛刺，银白色;

　　Smooth appearance, no zinc tumors, burrs, silver white;

　　2、安装方便，连接点少;

　　2. Easy installation and few connection points.

　　3.通风阻力低，噪音小;

　　3. Low ventilation resistance and low noise;

　　4. 强度、刚性好;

　　4. Good strength and rigidity;

　　5. 厚度可控，可在5-107微米范围内任意选择。

　　5. The thickness is controllable and can be chosen arbitrarily in the range of 5-107 microns.

　　6. 无氢脆、无温度危害，能保证材料力学性能不变;

　　6. No hydrogen embrittlement, no temperature hazard, can ensure that the mechanical properties of materials remain unchanged.

　　7、可更换部分热浸镀锌工艺;

　　7. Replaceable hot-dip galvanizing process;

　　8. 耐腐蚀性好，可达240小时中性盐雾试验;

　　8. Good corrosion resistance, up to 240 hours of neutral salt spray test;

　　9. 热浸镀锌，适用于各种强酸、强碱雾等腐蚀性环境;

　　9. Hot dip galvanizing is suitable for all kinds of corrosive environments such as strong acid and alkali fog.

　　10、可根据客户要求，专门设计、定制各种规格的风管。

　　10. Various specifications of air ducts can be specially designed and customized according to customer requirements.