SS400 2x2 Galvanized Steel Square Pipe Q345 Hollow Rectangular Steel Tube

Hot-dip galvanized square tube factory is widely used in many industries for its excellent tensile strength and carefulness. General industrial production will make stainless steel into its own necessary elegance to save time and effort. Hot-dip galvanized square tube factory is a good one. Therefore, in order to be able to make it easier and faster for consumers to choose a stainless steel sheet with a suitable structure.

Cold galvanizing is electro-galvanizing, and the amount of galvanizing is very small, only 10-50g/m2, and its corrosion resistance is much worse than that of hot-dip galvanized pipes. Most of the regular galvanized pipe manufacturers do not use electro-galvanized (cold plating) in order to ensure the quality. Only those small enterprises with small scale and outdated equipment use electro-galvanization, and of course their prices are relatively cheaper. The Ministry of Construction has officially announced that cold-galvanized pipes with outdated technology should be eliminated, and cold-galvanized pipes will not be allowed to be used as water and gas pipes in the future. The zinc layer is an electroplated layer, and the zinc layer is layered independently from the steel pipe substrate. The zinc layer is thin, and the zinc layer simply adheres to the steel pipe substrate and is easy to fall off. Therefore, its corrosion resistance is poor. In newly-built houses, it is forbidden to use cold galvanized steel pipes as water supply pipes.