Description of two types of galvanized steel pipe

The function of galvanized steel pipe is to be able to enhance the corrosion resistance by coating steel pipe with zinc. In order to guarantee the quality, zinc should be coated on the outside surface of the steel pipe. According to the view of galvanized steel pipe classification, it can be divided into two types, one is hot-dipped galvanized steel pipe, the other is cold galvanized steel pipe. Different proprieties require different processing methods, we may confuse about the different product features. What is the property of different product? Now we can talk about it.

Hot-dipped galvanized square steel pipe is produced by special processing method so that the molten metal can react with the iron and then form the alloy layer. By processing, the outside surface can form a tight zinc coating which can give full play to the product advantages. Processing technology of this type of steel pipe must be paid more attention. At first, we may remove the iron oxide of the steel pipe surface for the process of pickling and then they have to be cleaned in an aqueous solution of ammonium chloride in order to stabilize the performance. It will be forming a uniform surface of the steel pipe zinc coating by this complicated process which can enhance its adhesion and also improve the ability of corrosion resistance. In our daily life, they are used in many fields.

Cold rolled steel pipe is not very well compared with hot rolled steel pipe in terms of product quality. The manufacturing method of cold galvanized is just electroplating and the zinc coating is thin so the performance of corrosion resistance is worse than that of hot dipped galvanized steel pipe. The processing of hot-dipped galvanized is safety and can be widely used in construction, maybe some small companies adopt the method of cold galvanizing but the application field is not so widely as well as its effect. So we should consider this question in a long run.

The steel pipe prices is also affected by environmental requirements. Now cold galvanized steel pipe is not largely used in our daily life and hot-dipped galvanized steel pipe price is different because of its specifications and technology, maybe we should learn some relevant knowledge in advance when we make a decision of purchasing pipes and you can also consult some experts in this field. Our purpose is to buy high quality product at the cost of less money.