Hot Dipped Galvanized Steel Pipe are widely used in manufacturing industries such as construction, machinery, coal mines, chemical industry, electric power, railway vehicles, automobile industry, highways, bridges, containers, sports facilities, agricultural machinery, petroleum machinery, and prospecting machinery. Welded steel pipe with hot dip or electrogalvanized layer on the surface of galvanized steel pipe. Galvanizing can increase the corrosion resistance of steel pipes and prolong their service life.
Galvanized steel pipes are widely used. In addition to being used as pipeline pipes for general low-pressure fluids such as water, gas, oil, etc., they are also used as oil well pipes and oil pipelines in the petroleum industry, especially in offshore oil fields, oil heaters and condensation in chemical coking equipment Tubes for coolers, coal distillation oil washing exchangers, trestle tube piles, support pipes for mine tunnels, etc.
Detailed description of hot-dip galvanized pipe is the reaction of molten metal and iron substrate to produce an alloy layer, thereby combining the substrate 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, wash through the ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution tank and then send Hot dip plating bath.
Hot dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. Hot-dip galvanized steel pipe base galvanized pipe and the molten plating solution have a complex physical and chemical reaction, forming a corrosion-resistant and compact zinc-iron alloy layer. The alloy layer is integrated with the pure zinc layer and the steel tube substrate, so its corrosion resistance is strong.
