Sales galvanized steel pipe Supply Price
Sales galvanized steel pipe Supply Price
Effects of trace elements on the properties of galvanized steel pipes
(1) Carbon; the higher the carbon content, the higher the hardness of the steel, but the worse its plasticity and toughness.
(2) Sulfur: It is a harmful impurity in steel. When steel with high sulfur content is subjected to pressure processing at high temperature, it is easily brittle.
(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 must be strictly controlled. However, from another aspect, the low carbon steel contains higher sulfur and phosphorus, which can make its cutting easier, which is beneficial to improving the machinability 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 alloy steel (high manganese steel) with high manganese content has good wear resistance And other physical properties.
(5) Silicon; it can increase the hardness of the steel, but the plasticity and toughness are reduced. The electrical steel contains a certain amount of silicon, which can improve the soft magnetic properties.
(6) Tungsten; can improve the red hardness and heat strength of steel, and can improve the wear resistance of steel.
(7) Chromium; can improve the hardenability and wear resistance of steel, and can improve the corrosion resistance and oxidation resistance of steel.
In order to improve the corrosion resistance, general steel pipes (black pipes) are galvanized. There are two types of galvanized steel pipes: hot-dip galvanized and electro-galvanized steel. The thickness of hot-dip galvanized layer is low and the cost of galvanizing is low.
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