Shengshida Yongzhou galvanized pipe manufacturer, Yongzhou galvanized pipe low price

规格：

DN15*2.8

规格：

DN20*2.8

规格：

DN25*3.2

& c. Galvanized steel pipes are divided into cold-galvanized pipes and hot-galvanized pipes. The former has been banned, and the latter has been advocated by the country to be temporarily usable.
< c=b=rrr , hot-dip galvanized pipe < c=b=rrr , is to react the molten metal with the iron matrix to produce an alloy layer, thereby combining the matrix and the coating. 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 aqueous solution of ammonium chloride or zinc chloride or a mixed aqueous solution of ammonium chloride and zinc chloride, and then sent to in a hot dip plating tank. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion, and long service life. Most of the processes in the north adopt the zinc-replenishing process of direct coiling of galvanized strips.
Cold galvanizing is electro-galvanizing. The amount of galvanizing is very small, only /, and its corrosion resistance is much worse than that of hot-dip galvanized pipes. Regular galvanized pipe manufacturers, in order to ensure quality, most do not use electro-galvanizing (cold plating). Only small businesses with small scale and old equipment use electro-galvanizing, and of course their prices are relatively cheaper. In the future, cold-dip galvanized pipes are not allowed to be used as water and gas pipes.
< c=rb=r : < c= Hot-dip galvanized steel pipe
< c=b=rrr , the steel pipe matrix and the molten plating bath undergo complex physical and chemical reactions to form a corrosion-resistant structure. zinc-iron alloy layer. The alloy layer is integrated with the pure zinc layer and the steel pipe matrix. Therefore, it has strong corrosion resistance.
< c= :,
< c=rb=r : < c= Cold-dip galvanized steel pipe
< c=b=rrr, the zinc layer is an electroplated layer, and the zinc layer is independent of the steel pipe matrix Layered. The zinc layer is thin, and the zinc layer simply adheres to the steel pipe matrix and falls off easily. Therefore, its corrosion resistance is poor. In new residential buildings, it is prohibited to use cold-dip galvanized steel pipes as water supply pipes.