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The difference between galvanized steel tube and galvanized seamless steel tube
Galvanized steel tube and seamless steel pipe are two types of steel pipes. Galvanized steel refers to the surface of the steel pipe that has been galvanized. It may be a welded pipe or a seamless pipe. Therefore, the appearance of galvanized steel tube is simpler than galvanized seamless steel tube.
The galvanized steel tube is more resistant to corrosion, and the seamless steel tube can withstand higher pressure. Galvanized steel tube is not easy to rust due to the protection of zinc. Galvanized steel tube is lighter than seamless steel tube. If it is used for balcony, use galvanized steel tube. Seamless steel tube is not suitable for balcony because it is seamless. The wall thickness of steel pipes is natural weight, and the cost of seamless steel pipes is higher than that of galvanized steel pipes, and galvanized steel tubes are very useful, and their service life is far beyond that of seamless steel pipes. If the quality is excellent, it should not be a problem to use for more than 20 years. Of course, welding and painting should be done well, so as not to affect the service life of the galvanized steel pipe.
The galvanized steel tube has uniform coating and strong adhesion, but this is not a simple process similar to applying skin care products on the face. Hot-dip galvanizing involves pickling the welded steel pipe first. In order to remove the iron oxide on the surface of the steel pipe, after pickling, it is cleaned in a tank with ammonium chloride or zinc chloride aqueous solution or a mixed aqueous solution of ammonium chloride and zinc chloride, and then sent Into the hot dip plating tank.
The hot galvanized steel tube matrix and the molten plating solution undergo complex physical and chemical reactions to form a corrosion-resistant zinc-iron alloy layer with a compact structure. The alloy layer is integrated with the pure zinc layer and the steel pipe matrix.
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