Galvanized steel pipes are widely used, not only in the manufacture of work, but also in the manufacture of machinery, etc., which can be described as varied and in a wide range of fields. When purchasing galvanized steel pipes, many consumers are very interested in the use of galvanized steel pipes. In addition, they don’t know much about the types of galvanized steel pipes. Today we will learn more about them. .
What is the use of galvanized steel pipe?
1. There are two types of galvanized steel pipes: hot-dip galvanizing and electric galvanizing. Hot-dip galvanizing has a thick galvanized layer, which has the advantages of uniform coating, strong adhesion, and long service life. The cost of electro-galvanizing is low, the surface is not very smooth, and its corrosion resistance is much worse than that of hot-dip galvanized pipes.
2. The use of galvanized pipes: the iron pipes used for gas and heating are also galvanized pipes. Galvanized pipes are used as water pipes. Bacteria that grow on the rough inner wall and rust cause excessive heavy metal content in the water, which seriously endangers human health. In the 1960s and 1970s, developed countries in the world began to develop new pipes and gradually banned galvanized pipes. Four ministries and commissions including the Ministry of Construction of China have also issued a document stating that galvanized pipes will be banned from 2000, and many galvanized water pipes that were used before can still be seen today. At present, galvanized pipes are rarely used in cold water pipes in newly built communities, and galvanized pipes are used in hot water pipes in some communities.
3. Galvanized has a stronger protective effect and strong corrosion resistance. The whole structure is composed of zinc, forming a dense quaternary crystal, which forms a barrier on the steel plate, thus effectively preventing the penetration of corrosion factors. Corrosion resistance comes from the strong protective function of the barrier layer of zinc. When zinc is used for sacrificial protection on cut edges, scratches and scratches on the coating, zinc forms an insoluble oxide layer to perform barrier protection.
What are the types of galvanized steel pipes?
1. Hot-dip galvanized square tube: It is a square tube made by welding steel plates or steel strips after crimping and forming. On the basis of this square tube, the square tube is placed in a hot-dip galvanizing pool to undergo a series of chemical reactions. Later formed a square tube. The production process of hot-dip galvanized square tube is relatively simple, and the production efficiency is very high, and there are many varieties and specifications. This kind of square tube requires very little equipment and capital, and is suitable for the production of small galvanized square tube manufacturers. But in terms of strength, the strength of this kind of steel pipe is far lower than that of seamless square pipe.
2. The cold galvanized square tube uses the principle of cold galvanizing on the square tube used to make the square tube anti-corrosion. Different from hot-dip galvanizing, cold-dip galvanizing mainly uses electrochemical principles to prevent corrosion. Therefore, it is necessary to ensure sufficient contact between zinc powder and steel to generate electrode potential differences. Therefore, surface treatment of steel is very important.
The types and specifications of galvanized steel pipes selected in different regions are different. When purchasing, you can choose according to your own needs. Pay attention to choosing branded steel pipes. The above is the relevant introduction about what is the use of galvanized steel pipes and what are the types of galvanized steel pipes.
Post time: Dec-23-2022