Hot-dip galvanized pipes, in order to improve the corrosion resistance of steel pipes, general steel pipes are galvanized. Galvanized steel pipes are divided into hot-dip galvanizing and electro-galvanizing. Hot-dip galvanizing has a thick galvanized layer, electro-galvanizing has a low cost, and the surface is not very smooth.

Hot-dip galvanized pipes are to make molten metal react with the iron matrix to produce an alloy layer, so that the matrix and the coating are combined. Hot-dip galvanizing is to pickle the steel pipe first. In order to remove the iron oxide on the surface of the steel pipe, after pickling, it is cleaned in an ammonium chloride or zinc chloride aqueous solution or a mixed aqueous solution of ammonium chloride and zinc chloride, and then sent to the hot-dip plating tank. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion, and long service life. The steel pipe matrix undergoes complex physical and chemical reactions with the molten plating solution to form a corrosion-resistant zinc-iron alloy layer with a tight structure. The alloy layer is integrated with the pure zinc layer and the steel pipe matrix. Therefore, it has strong corrosion resistance.

Hot-dip galvanized steel pipes are widely used in the fields of construction and engineering, and their material grade directly affects the quality and service life of the product. Choosing the right material grade is crucial to the safety and reliability of the project. The following will introduce the material grades and characteristics of hot-dip galvanized steel pipes to help you better understand and purchase suitable products.