Classification of galvanized square tubes

The galvanized square tube is divided into a Hot-Dip Galvanized square tube and a cold-galvanized square tube from the production process. It is precisely because of the difference in the addition of these two galvanized square tubes that they have many different physical and chemical properties. In general they have many differences in strength, toughness and mechanical properties.WhatsApp:+86 15192191350

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Hot-dip galvanized square tube

Hot-dip galvanized square tube: is a square tube welded after the steel plate or the steel strip is crimped, and the square tube is placed in the hot-dip galvanizing bath on the basis of the square tube. a square tube. The production process of hot-dip galvanized square tubes is relatively simple, and the production efficiency is very high, and there are many varieties and specifications. The equipment and funds required for such square tubes are few and suitable for the production of small galvanized square tube manufacturers. But in terms of strength, the strength of this steel tube is much lower than that of a Seamless Square Tube.

Cold galvanized square tube

The cold-galvanized square tube uses the principle of cold-galvanizing on the square tube used to make the square tube have anti-corrosion properties. Different from hot-dip galvanizing, cold-galvanized coatings are mainly anti-corrosion by electrochemical principle. Therefore, it is necessary to ensure sufficient contact between the zinc powder and the steel to produce an electrode potential difference, so the surface treatment of the steel is very important.TEL:+86 15192191350

The difference between cold and hot galvanized square tubes

Galvanized square tubes are available in two categories: hot-dip galvanized square tubes and galvanized square tubes. The hot-dip galvanized square tube has a wet method, a dry method, a lead-zinc method, a redox method, and the like. The main difference between different hot-dip galvanizing methods is how to activate the surface of the pipe to improve the galvanizing quality after the acid pipe is cleaned. The dry process and redox process are mainly used in production, and their characteristics are shown in the table. The zinc-plated zinc layer has a very smooth and compact surface and uniform structure; it has good mechanical properties and corrosion resistance; zinc consumption is 60% to 75% lower than that of hot-dip galvanizing. Electro-galvanizing has certain technical complexity, but it must be applied to single-sided coatings, double-sided coatings with different thicknesses on the inner and outer surfaces, and thin-walled tubes.

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