Channel section steel is kind of carbon structural steel, for its high strength and good weld bility, it can be used in construction and automobile manufacture. We also provide flat bar plate, flat bulb steel, angle steel and other hot rolled steel. 
Hot-dip galvanized channel steel can be divided into hot-dip galvanized channel steel and hot-blown galvanized channel steel according to different galvanizing processes. A zinc layer is attached to the surface of the component, so as to achieve the purpose of anti-corrosion.
The main method of galvanizing the surface of channel steel is hot-dip galvanizing. Hot-dip galvanizing is developed from the older hot-dip galvanizing method, which has a history of 170 years since the application of hot-dip galvanizing to industry in France in 1836. However, in the past 30 years, with the rapid development of cold-rolled strip, the hot-dip galvanizing industry has developed on a large scale.
Among various coating methods for protecting steel substrates, hot-dip galvanizing is a very good one. It is in the liquid state of zinc, after quite complex physical and chemical action, not only a thick pure zinc layer is plated on the steel, but also a zinc-iron alloy layer is formed. This kind of plating method not only has the corrosion resistance characteristics of electro-galvanizing, but also has a zinc-iron alloy layer. It also has strong corrosion resistance unmatched by electro-galvanizing. Therefore, this plating method is especially suitable for strong corrosive environments such as various strong acids and alkali mists.