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How to better make a classification of galvanized steel pipe

We are quite familiar with zinc material and its insulation performance is better, so we can often find that some steel pipes such as galvanized steel pipe are covered with zinc coating that has the function of insulation. The same is true in steel tubes. If a steel tube has a zinc coating on the surface, it is called galvanized steel tube in the steel pipe industry. This is the origin of the name of galvanized steel pipe.However, the types and sizes of this kind of steel pipe are in a varieties. Do you know how to distinguish?

Galvanized round steel pipe is most often seen in the pipe specification table. This is because in the steel pipe market at present round steel pipe become more and more prevalent because of its suitable pipe shape. It can be applied to all walks of life such as scaffolding support, gas transportation tube and so on. But in reality, the category of galvanized steel pipe is not limited to galvanized round steel pipe. The steel pipe shape can include square and rectangular. Each steel pipe shape can meet requirements of its own specific working site.

Although we can not often see galvanized square steel pipe in our daily life, this kind of steel pipe also belongs to the specification of galvanized steel pipe with the shape of the transverse section as well as the edges and corners. Generally speaking, it is very simple to distinguish these two kinds of pipes and customers with certain common sense can classify them. But there are two kinds of galvanized steel pipes that are difficult to distinguish. That is hot dipped galvanized steel pipe and cold galvanized steel pipe.

However, how to distinguish these two kinds of steel pipe above mentioned?Hot galvanizing is a kind of processing technology that put a steel pipe soak in zinc solution and then form a zinc layer after cooling. Cold galvanizing is the adoption of a certain technology that directly spray a layer of zinc on the steel pipe surface. In a brief, hot galvanizing is the dip galvanizing method, while cold galvanizing is spraying on the steel pipe surface. Therefore, their zinc coating is quite different in terms of thickness and corrosion quality. Besides, the color also vary. That means the color of hot galvanizing is very deep while the color of cold galvanizing is lighter. Steel pipe manufacturers need to provide customers with professional knowledge about galvanized steel pipe.

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