We all know that the Ji'nan galvanized pipe is galvanized for the general steel pipe to improve the corrosion resistance. There are two kinds of galvanized hot dip galvanizing and electric steel zinc, the hot galvanized zinc coating is thick, the electrogalvanizing cost is low, so the galvanized pipe is made.
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. High sulphur steel is brittle cracking when it is processed at high temperature. It is usually called thermal brittleness.
3, p; can make the plasticity and toughness of the steel decreased significantly, especially at low temperature is more serious, this phenomenon is called cold brittleness. In high-quality steel, sulfur and phosphorus must be strictly controlled, but on the other hand, sulfur and phosphorus containing high in low carbon steels, can make it easy to cutting broken, is benefit to improve the machinability of the steel is.
4, Mn; can improve the strength of steel, can weaken and eliminate the adverse effects of sulfur, and can improve the hardenability of steel, manganese content of high alloy steel has good wear resistance and other physical properties.
5, silicon; it can improve the hardness of the steel, but the plasticity and toughness decrease, the steel in the electric steel contains a certain amount of silicon, which can improve the soft magnetic properties.
6, tungsten; increase the hardness and heat strength of the steel, and improve the wear resistance of the steel.
7, chromium, can improve the hardenability and wear resistance of steel, and can improve the corrosion resistance and oxidation resistance of steel.
We have been to quality first, customer first, as our service tenet, try our best to provide you with satisfactory service, we sincerely welcome you to visit the company, to purchase, I hope we have a good opportunity to work together to create a win-win situation!