We supply continuous Hot dip galvanizing (HDGL) steel cold coil to coat zinc on it. 

The continuous hot-dip galvanizing line has an in-line annealing furnace, with an atmosphere comprised of a mixture of nitrogen and hydrogen to avoid oxidation of the steel ,followed by a molten zinc pot to galvanize the steel, The in-line furnace softens the steel through an annealing process, while the molten zinc pot, along with an air wiping mechanism, controls the application and mass of zinc coated on the steel. The product after zinc coating is referred to as galvanized steel, The zinc coating designations based on the zinc coating mass, and is avalable with regular spangle and mini-skin-passed spangle surfaces. While galvanized steel with a regular-spangle surface finds applications in many industries, including ducting, the product is not suitable for applications which require painting. Mini-skin-passed spangle, which has a uniform surface texture, is the most suitable product for painting applications.