什么因素影响镀锌钢管的性能

镀锌钢管是焊接钢管，在表面上具有热浸镀锌或电镀层。镀锌可以增加腐蚀钢管的电阻，延长使用寿命。镀锌管道具有广泛的用途。除了用于输送水，天然气，油和其他一般低压流体的管线，还用作石油工业，特别是海上油田的油井管和油管，以及石油加热器以及化学焦化的冷凝设备。用于冷却器的管道，煤蒸煮洗涤油交换器，Trestle桥梁的管桩，以及矿井隧道的支撑框架管道。
常用的镀锌管道，使用镀锌管道，用于气体和加热的铁管也是镀锌管。镀锌管用作水管。经过几年的使用后，管道中产生了大量的生锈和污垢，而且黄色的水不仅污染了卫生洁具。，它与细菌混合在不均匀的内壁上品种，锈病导致水中过度重金属含量，这严重危及人体的健康。

性能影响
　　 (1) Carbon; the higher the carbon content, the higher the hardness of the steel, but the worse its plasticity and toughness.

　　(2) Sulfur is a harmful impurity in steel. Steel with high sulfur content is prone to cracks when processed under high temperature and high pressure, which is usually called hot brittleness.
　　(3) Phosphorus can significantly reduce the plasticity and toughness of steel, especially at low temperatures. This phenomenon is called cold brittleness. In high-quality steel, sulfur and phosphorus should be strictly controlled. On the other hand, low carbon steel has high sulfur and phosphorus content and is easy to cut, which is beneficial to improve the machining performance of steel.
　　 (4) Manganese; can improve the strength of steel, weaken and eliminate the adverse effects of sulfur, and improve the hardenability of steel. High-manganese high-alloy steel (high-manganese steel) has good wear resistance and other physical properties.
　　 (5) Silicon; it can increase the hardness of steel, but the plasticity and toughness are reduced. Electrical steel contains a certain amount of silicon, which can improve its soft magnetic properties.
　　 (6) Tungsten; can improve the red hardness and thermal strength of steel, and improve the wear resistance of steel.
　　(7) Chromium can improve the hardenability and wear resistance of steel, and improve the corrosion resistance and oxidation resistance of steel.
为了提高耐腐蚀性，普通钢管（黑管）是镀锌。镀锌钢管分为热浸镀锌和电动钢镀锌。热浸镀锌层厚，镀锌成本低。可以使用镀锌钢管。

镀锌钢管上热浸镀锌层的防腐蚀作用
　　 Galvanized steel pipe anticorrosive zinc has a negative electrode potential than iron. When zinc and iron form a micro battery, zinc is the anode and iron is the cathode. When it is corroded, the zinc is dissolved and the iron is not harmed. When the galvanized layer has small cracks or damage, the zinc will be in the form of a dedicated anode to prevent the steel at the crack or damage from rusting. This is the main feature of the galvanized layer being better than other coatings. When hot-dip galvanized steel pipe is dipped galvanized, the metallurgical bond between the zinc-iron alloy layer and the steel substrate and the zinc layer is stronger than the bond between paint and steel.
　　The anticorrosive zinc layer of galvanized steel pipe has a shielding and protective effect on steel. Zinc forms a shielding layer on the outer surface of the steel substrate in the atmosphere or other environments. The corrosion process of zinc increases its ability to form a shielding layer. This is because zinc reacts with oxygen, carbon dioxide, and moisture in the air to form an anti-corrosion by-product basic zinc carbonate film.
基材和纯锌层之间的锌 - 铁合金层含有90％锌，具有与锌类似的电化学保护效果;涂层越厚，使用寿命越长，使用寿命基本上与厚度成比例。