Hot dip galvanized pipeHot dip galvanized pipe is to make molten metal and iron matrix reaction to produce alloy layer, so that the substrate and coating two 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 by ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution tank, and then sent into the hot dip plating tank.Hot dip galvanizing has the advantages of uniform coating, strong adhesion and long service life.

ot dip galvanized pipe is to make molten metal and iron matrix reaction to produce an alloy layer, so that the matrix and coating are combined. Hot dip galvanized steel pipe is first pickling, in order to remove iron oxide on the surface of the steel pipe, after pickling, through ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution tank for cleaning, and then into the hot dip plating tank. Hot dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. Hot dip galvanized steel tube matrix and molten bath have complex physical and chemical reactions, forming corrosion resistant structure of tight zinc-iron alloy layer. The alloy layer is integrated with pure zinc layer and steel tube matrix, so it has strong corrosion resistance.

Galvanized square pipe is a kind of hollow square section steel pipe with hot rolled or cold rolled galvanized strip steel or galvanized coil as blank after cold bending processing and forming by high-frequency welding made of square section shape and size, or the cold bending hollow steel pipe done in advance and then hot dip galvanized processing galvanized square pipe.